Brand gradient

Spline gradient

The gradient Spline's published colour tokens imply, derived by a pure function of the palette: primary → secondary in OKLab (OKLCH shorter hue when the hues are more than 140° apart; a tonal ramp when they are within ΔE 0.15), then a hero background with an ink that passes AA at the worst point along the line, a button surface with hover and active states, and the variant contact sheet. Same inputs, same gradients, forever — which is what makes them citable; the same values are served as --brand-gradient in the brand's brand.css.

#4482fc #6a9955 #ce9178

Open in the maker Spline colors →Full brand page →

Source: spline.design
Extracted: 2 September 2026
Version: 3

Spline

black text · worst 5.82:1 · AA

white 3.32 AA largeblack 5.82 AAbanding high

Hero and button

Hero background

Open in maker →

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.07 until the ink passes AA at the worst point (4.52:1).

white 4.52 AAblack 4.49 AA largebanding high

css

linear-gradient(135deg in oklab, #5e759e 0%, #6a7b64 100%)

tailwind v4

bg-linear-to-br/oklab from-[#5e759e] to-[#6a7b64]

Button / CTA

Open in maker →

ΔL 0.08 top→bottom in the primary's hue (a lit surface, not a rainbow); hover L +0.03, active L −0.03. L shifted −0.10 so white ink gets as close as the ±0.1 bound allows to AA on the surface and both states (worst 4.08:1). Ink is below AA (4.08:1 at the worst point) — use it for large text only, or pick a darker/lighter primary for buttons.

white 4.60 AAblack 3.21 AA largebanding high

Get started

hover

active

label ink below AA — large text only

css

linear-gradient(180deg in oklch shorter hue, #326fe7 0%, #1a55cc 100%)

tailwind v4

bg-linear-to-b/oklch from-[#326fe7] to-[#1a55cc]

Variants

Tonal ramp

Open in maker →

white 1.84 failsblack 2.69 failsbanding high

css

linear-gradient(135deg in oklch shorter hue, #98c1ff 0%, #4482fc 50%, #0d48be 100%)

tailwind v4

bg-linear-to-br/oklch from-[#98c1ff] via-[#4482fc] to-[#0d48be]

Analogous

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Partner hue from the analogous rule at the source colour's lightness.

white 3.40 AA largeblack 5.83 AAbanding high

css

linear-gradient(135deg in oklab, #4482fc 0%, #1295c8 100%)

tailwind v4

bg-linear-to-br/oklab from-[#4482fc] to-[#1295c8]

Complementary

Open in maker →

Partner hue from the complementary rule at the source colour's lightness. ΔH 180° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

white 3.55 AA largeblack 5.49 AAbanding medium

css

linear-gradient(135deg in oklch shorter hue, #4482fc 0%, #af800f 100%)

tailwind v4

bg-linear-to-br/oklch from-[#4482fc] to-[#af800f]

Triadic

Open in maker →

Partner hue from the triadic rule at the source colour's lightness.

white 3.58 AA largeblack 5.30 AAbanding medium

css

linear-gradient(135deg in oklab, #4482fc 0%, #fc153d 100%)

tailwind v4

bg-linear-to-br/oklab from-[#4482fc] to-[#fc153d]

Report — brand gradient

white ink: worst 3.32:1 at 90% (AA-large only); black ink: worst 5.82:1 at 1% (AA) → use black text.
Banding high: ~9px bands at 1440px — add grain 18 (≈2% soft-light noise) or shorten the ramp.

Export

The custom properties below are byte-identical to the gradient block in brand.css; the DTCG token is what tokens.json carries.

css custom properties · brand.css

:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 3.32:1 AA-large, black 5.82:1 AA */
  --brand-gradient: linear-gradient(135deg in oklab, #4482fc 0%, #6a9955 100%);
  /* hero — worst-case contrast: white 4.52:1 AA, black 4.49:1 AA-large; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #5e759e 0%, #6a7b64 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 4.60:1 AA, black 3.21:1 AA-large */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #326fe7 0%, #1a55cc 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #3b78f1 0%, #245fd6 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #2a65dd 0%, #104cc1 100%);
  --brand-gradient-button-ink: #ffffff;
  /* button ink: 4.1:1 — below AA */
}

svg · brand gradient

<svg xmlns="http://www.w3.org/2000/svg" width="1440" height="600" viewBox="0 0 1440 600"><defs><linearGradient id="bs-gradient" gradientUnits="userSpaceOnUse" x1="210" y1="-210" x2="1230" y2="810"><stop offset="0%" stop-color="#4482fc"/><stop offset="7.14%" stop-color="#4585f1"/><stop offset="14.29%" stop-color="#4688e6"/><stop offset="21.43%" stop-color="#488bdb"/><stop offset="28.57%" stop-color="#4a8ed0"/><stop offset="35.71%" stop-color="#4c90c5"/><stop offset="42.86%" stop-color="#4f92ba"/><stop offset="50%" stop-color="#5293af"/><stop offset="57.14%" stop-color="#5595a4"/><stop offset="64.29%" stop-color="#589698"/><stop offset="71.43%" stop-color="#5c978c"/><stop offset="78.57%" stop-color="#5f987f"/><stop offset="85.71%" stop-color="#639872"/><stop offset="92.86%" stop-color="#669964"/><stop offset="100%" stop-color="#6a9955"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>

dtcg · tokens.json

{
  "gradient": {
    "brand": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.267,
              0.51,
              0.988
            ],
            "hex": "#4482fc"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.416,
              0.6,
              0.333
            ],
            "hex": "#6a9955"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklab, #4482fc 0%, #6a9955 100%)",
          "interpolation": "oklab",
          "angle": 135,
          "name": "brand",
          "contrast": {
            "white": {
              "ratio": 3.324,
              "at": 0.9026,
              "passesAA": false,
              "passesAALarge": true
            },
            "black": {
              "ratio": 5.819,
              "at": 0.01,
              "passesAA": true,
              "passesAALarge": true
            },
            "suggestedInk": "#000000"
          }
        }
      },
      "$description": "The canonical brand gradient (--brand-gradient)."
    },
    "hero": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.369,
              0.459,
              0.62
            ],
            "hex": "#5e759e"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.416,
              0.482,
              0.392
            ],
            "hex": "#6a7b64"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklab, #5e759e 0%, #6a7b64 100%)",
          "interpolation": "oklab",
          "angle": 135,
          "name": "hero",
          "ink": "#ffffff",
          "contrast": {
            "white": {
              "ratio": 4.52,
              "at": 0.8889,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 4.494,
              "at": 0.0476,
              "passesAA": false,
              "passesAALarge": true
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Low-chroma hero background with a text-safe ink (--brand-gradient-hero)."
    },
    "button": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.196,
              0.435,
              0.906
            ],
            "hex": "#326fe7"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.102,
              0.333,
              0.8
            ],
            "hex": "#1a55cc"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(180deg in oklch shorter hue, #326fe7 0%, #1a55cc 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 180,
          "name": "button",
          "ink": "#ffffff",
          "states": {
            "hover": "linear-gradient(180deg in oklch shorter hue, #3b78f1 0%, #245fd6 100%)",
            "active": "linear-gradient(180deg in oklch shorter hue, #2a65dd 0%, #104cc1 100%)"
          },
          "contrast": {
            "white": {
              "ratio": 4.602,
              "at": 0,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 3.215,
              "at": 0.9841,
              "passesAA": false,
              "passesAALarge": true
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Button / CTA surface with hover and active states (--brand-gradient-button)."
    }
  }
}

Colours

#4482fc #6a9955 #ce9178

mcpConnect your agent — Spline's gradients on demand

live endpoint

Point any MCP client at the shared gradients endpoint and your agent gets the same engine as this page — make_gradient returns CSS with the interpolation space, Tailwind v4, SVG, a PNG URL, a DTCG token and the contrast report in one call; brand_gradients derives the whole contact sheet from a brand or a palette. Read-only, no key. Every gradient is a /gradients/new/… link: open it, refine, paste it back.

endpointhttps://mcp.brandsweets.com/gradients/mcp

claude mcp add --transport http brandsweets-gradients https://mcp.brandsweets.com/gradients/mcp

try this prompt

›brand_gradients for spline-design — give me the hero CSS and the ink that passes AA, then a version in oklch

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Spline and its marks belong to their owner. This page uses the name nominatively to describe gradients derived from the brand's published colour values; it does not reproduce logos or other brand assets, and it is not affiliated with or endorsed by Spline. Owner of this brand? Request a correction or removal → Machine-readable: gradients.md