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SeaGreen and Sienna

Triadic color combination with 1.23:1 contrast ratio

#2E8B57
#A9561E

Color Values

SeaGreen
HEX #2E8B57
RGB 46, 139, 87
HSL 146, 50%, 36%
Sienna
HEX #A9561E
RGB 169, 86, 30
HSL 24, 70%, 39%

Harmony: Triadic

These colors are roughly 120 degrees apart on the wheel — a triadic relationship that stays lively without clashing. Triadic schemes work best when one color dominates and the other two act as accents.

The hue angle between SeaGreen and Sienna is 122 degrees. You can explore these relationships interactively in our Color Wheel Tool.

WCAG Contrast

1.23:1
SeaGreen background with Sienna text
Below AA — decorative use only

UI Preview

SeaGreen surface

Sample text on a seagreen background demonstrates readability and visual hierarchy.

Sienna surface

Sample text on a sienna background demonstrates readability and visual hierarchy.

Design Tokens

CSS Variables

:root {
  --color-a: #2E8B57;
  --color-b: #A9561E;
  --color-a-rgb: 46, 139, 87;
  --color-b-rgb: 169, 86, 30;
}

JSON

{
  "name": "SeaGreen and Sienna",
  "colors": [
    {
      "name": "SeaGreen",
      "hex": "#2E8B57",
      "rgb": [
        46,
        139,
        87
      ]
    },
    {
      "name": "Sienna",
      "hex": "#A9561E",
      "rgb": [
        169,
        86,
        30
      ]
    }
  ],
  "harmony": "Triadic",
  "contrastRatio": 1.23
}

Explore These Colors

Frequently Asked Questions

Do seagreen and sienna go together?

Yes. SeaGreen and Sienna form a triadic color combination. These colors are roughly 120 degrees apart on the wheel — a triadic relationship that stays lively without clashing. Triadic schemes work best when one color dominates and the other two act as accents. The pairing has a WCAG contrast ratio of 1.23:1, which is below the AA threshold for text — use it for decorative purposes rather than text readability.

What is the contrast ratio between seagreen and sienna?

The WCAG 2.1 contrast ratio between SeaGreen (#2E8B57) and Sienna (#A9561E) is 1.23:1. This ratio is below AA. Use the pairing for backgrounds, borders, and decorative elements rather than text-on-background combinations.

How do I use seagreen and sienna in design?

A safe starting point is the 60/30/10 rule: give one color about 60 percent of the surface area, the other about 30 percent, and reserve the remaining 10 percent for an accent or neutral. If one color is significantly darker, use it for text or structural elements and the lighter one for backgrounds. Test the result with our Contrast Checker if text is involved.

What are the hex and RGB values for seagreen and sienna?

SeaGreen has the hex code #2E8B57 and RGB values rgb(46, 139, 87). Sienna has the hex code #A9561E and RGB values rgb(169, 86, 30). You can copy these directly into CSS or use the design tokens provided on this page.