Seagreen colour (#2E8B57)
Seagreen is medium a green with hex code #2E8B57, one of the 148 named colours every browser understands, so you can write color: ${name} directly in CSS. In RGB it is 46, 139, 87; in HSL 146°, 50%, 36%. Use the tool to explore shades and harmonies.
How to use the Seagreen colour
- The colour is pre-filled; click Explore to see all formats, shades and harmonies.
- Edit the value to try a variation.
- Copy the code you need.
Seagreen in every format
| Format | Value |
|---|---|
| HEX | #2E8B57 |
| RGB | rgb(46, 139, 87) |
| RGB (0–1) | 0.180, 0.545, 0.341 |
| HSL | hsl(146, 50%, 36%) |
| CMYK (approx.) | 67%, 0%, 37%, 45% |
| CSS | color: seagreen; |
Shades and tints of Seagreen
Same hue and saturation, lightness from 90% to 10%:
#d9f2e4 | #b3e6c9 | #8cd9ad | #66cc92 | #40bf77 | #33995f | #267347 | #1a4d30 | #0d2618 |
Colours that go with Seagreen
| Harmony | Colours | |
|---|---|---|
| Complementary | #8a2e62 | |
| Triadic | #562e8a | #8a562e |
| Analogous | #2e8a84 | #348a2e |
Similar named colours
The closest CSS named colours by RGB distance, useful when you need a keyword instead of a hex code or want a near match:
| Colour | HEX | Difference |
|---|---|---|
| mediumseagreen | #3cb371 | close |
| forestgreen | #228b22 | close |
| darkslategray | #2f4f4f | close |
| teal | #008080 | close |
| darkolivegreen | #556b2f | close |
Accessibility
Contrast ratio of Seagreen against white is 4.25:1 (fails WCAG AA for normal text) and against black 4.95:1 (passes). Use black or very dark text on a Seagreen background rather than white.
Frequently asked questions
What is the hex code for Seagreen?
#2E8B57.
What is Seagreen in RGB?
rgb(46, 139, 87).
What colour is complementary to Seagreen?
#8a2e62, directly opposite on the colour wheel.
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Last updated 2026-09-23.