Seagreen4
seagreen4 · #2E8B57
HEX
#2E8B57
RGB
rgb(46, 139, 87)
CMYK
cmyk(67%, 0%, 37%, 45%)
HSL
hsl(146, 50%, 36%)
LAB
lab(51.5, -39.7, 20.1)
What is Seagreen4?
Seagreen4 is the seagreen4 reference in the X11 named colors. Its sRGB value is #2E8B57 (rgb 46, 139, 87). It sits in the green family. Historical X Window System color names — the numbered 1-4 lightness variants of the classic xorg-server rgb.txt palette. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Seagreen4 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Seagreen4
An 11-step tonal scale derived from Seagreen4 (#2E8B57). Click any swatch to copy its HEX. Use these as a starting point for design tokens, hover states, and disabled states in a design system.
50
#EEF6F2
#EEF6F2
100
#DEECE4
#DEECE4
200
#BCDAC9
#BCDAC9
300
#97C5AB
#97C5AB
400
#62A881
#62A881
500
#2E8B57
#2E8B57
600
#27764A
#27764A
700
#1E5A39
#1E5A39
800
#153F27
#153F27
900
#0C2316
#0C2316
950
#06110A
#06110A
Lighter tints (mixed with white)
15%
#74A484
30%
#99B8A3
45%
#B6CABC
60%
#CDDAD1
75%
#E2E9E4
Darker shades (mixed with black)
15%
#2A8150
30%
#267649
45%
#216941
60%
#1B5A37
75%
#14482B
Color harmonies for Seagreen4
Classic color-theory harmonies derived from rotating the hue of Seagreen4. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#2E8B57
#2E8B57
#8A2E62
#8A2E62
Triadic
Three colors 120° apart
#2E8B57
#2E8B57
#562E8A
#562E8A
#8A562E
#8A562E
Analogous
Two neighbors ±30° on the wheel
#348A2E
#348A2E
#2E8B57
#2E8B57
#2E8A84
#2E8A84
Split-complementary
Base + two colors flanking its complement
#2E8B57
#2E8B57
#842E8A
#842E8A
#8A2E34
#8A2E34
Tetradic
Two complementary pairs
#2E8B57
#2E8B57
#2E628A
#2E628A
#8A2E62
#8A2E62
#8A562E
#8A562E
Square
Four colors evenly spaced 90° apart
#2E8B57
#2E8B57
#2E348A
#2E348A
#8A2E62
#8A2E62
#8A842E
#8A842E
Seagreen4 in every color space
Full conversion of Seagreen4 across the color spaces designers and developers actually use — including OKLCH (the perceptually-uniform space that powers Tailwind v4 and CSS Color Module Level 4) and HWB.
HEX
#2E8B57
RGB
rgb(46, 139, 87)
CMYK
cmyk(67%, 0%, 37%, 45%)
HSL
hsl(146, 50%, 36%)
HSV
hsv(146, 67%, 55%)
HWB
hwb(146 18% 45%)
CIE Lab
lab(51.5 -39.7 20.1)
OKLCH
oklch(56.9% 0.119 154.9)
XYZ (D65)
xyz(12.08, 19.73, 12.19)
Copy-ready code for Seagreen4
Drop-in snippets for CSS, Tailwind, Sass, iOS Swift, and Android XML. Click the copy button on any snippet to put it on your clipboard.
CSS
color: #2E8B57;
background-color: #2E8B57;CSS variable
:root {
--color-seagreen4: #2E8B57;
}Tailwind config
// tailwind.config.js
colors: {
'seagreen4': '#2E8B57',
}Sass
$color-seagreen4: #2E8B57;Swift UIColor
UIColor(red: 0.180, green: 0.545, blue: 0.341, alpha: 1.0)Android XML
<color name="seagreen4">#2E8B57</color>Closest match in every color system
The nearest Seagreen4 equivalent in every other color system on this site, ranked by ΔE2000 perceptual distance. Useful when translating between design-system, web-standard, and industrial color references.
Closest in X11 named colors
Top 6 ΔE2000-closest entries within the same collection.
Closest Pantone matches
Top 6 ΔE2000-closest Pantone references. Cross-system matching is approximate — see disclaimer.
Closest RAL Classic matches
Top 6 ΔE2000-closest RAL Classic references for industrial coating cross-reference.
RAL 6024
#308446
Traffic green
RAL 6017
#4C9141
May green
RAL 6001
#287233
Emerald green
RAL 6011
#587246
Reseda green
RAL 6010
#35682D
Grass green
RAL 6018
#57A639
Yellow green
FAQ about Seagreen4
What is the HEX code for Seagreen4?
Seagreen4 (seagreen4) has the HEX code #2E8B57. In RGB it is rgb(46, 139, 87), and in CMYK it is cmyk(67%, 0%, 37%, 45%).
What is the OKLCH value of Seagreen4?
Seagreen4 converts to oklch(0.569 0.119 154.9). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Seagreen4 accessible for body text?
Used as a background, Seagreen4 has a contrast ratio of 4.95:1 with black text and 4.25:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use black text and verify in real UI context.
What is the closest Pantone to Seagreen4?
The closest Pantone reference to Seagreen4 by ΔE2000 perceptual distance is Pantone 348 C (#00843D). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Seagreen4?
The closest RAL Classic reference to Seagreen4 by ΔE2000 distance is RAL 6024 (Traffic green, #308446). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Seagreen4?
The complementary color (180° opposite on the HSL color wheel) of Seagreen4 is #8A2E62. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
X11 named colors (xorg rgb.txt)
The historical X11 color name list shipped in the xorg-server rgb.txt file. Roughly 550 entries covering classic computing color names like 'PapayaWhip', 'MediumAquamarine', and 'DarkSlateGray'. Many CSS named colors originate here. Use as a reference for legacy and creative color names. Most modern CSS implementations accept these names directly.
- Source type
- derived
- Confidence
- high
- License
- MIT/X11 license (X Consortium)
- Last reviewed
- 2026-05-24
Workflow tags
X11 colors are sRGB digital values from a 1980s color system. For print, convert to a process-appropriate color and proof against substrate.