Seagreen3
seagreen3 · #43CD80
HEX
#43CD80
RGB
rgb(67, 205, 128)
CMYK
cmyk(67%, 0%, 38%, 20%)
HSL
hsl(147, 58%, 53%)
LAB
lab(73.8, -54.3, 27.8)
What is Seagreen3?
Seagreen3 is the seagreen3 reference in the X11 named colors. Its sRGB value is #43CD80 (rgb 67, 205, 128). 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 Seagreen3 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Seagreen3
An 11-step tonal scale derived from Seagreen3 (#43CD80). 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
#F0FBF5
#F0FBF5
100
#E1F7EB
#E1F7EB
200
#C3EFD6
#C3EFD6
300
#A1E6C0
#A1E6C0
400
#72DAA0
#72DAA0
500
#43CD80
#43CD80
600
#39AE6D
#39AE6D
700
#2C8553
#2C8553
800
#1E5C3A
#1E5C3A
900
#113320
#113320
950
#08190F
#08190F
Lighter tints (mixed with white)
15%
#7BD69C
30%
#9DDEB3
45%
#B8E5C7
60%
#CFEDD8
75%
#E2F4E8
Darker shades (mixed with black)
15%
#3EBF77
30%
#38AF6C
45%
#319D61
60%
#298753
75%
#1F6D42
Color harmonies for Seagreen3
Classic color-theory harmonies derived from rotating the hue of Seagreen3. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#43CD80
#43CD80
#CD428E
#CD428E
Triadic
Three colors 120° apart
#43CD80
#43CD80
#8042CD
#8042CD
#CD8042
#CD8042
Analogous
Two neighbors ±30° on the wheel
#49CD42
#49CD42
#43CD80
#43CD80
#42CDC6
#42CDC6
Split-complementary
Base + two colors flanking its complement
#43CD80
#43CD80
#C642CD
#C642CD
#CD4249
#CD4249
Tetradic
Two complementary pairs
#43CD80
#43CD80
#428ECD
#428ECD
#CD428E
#CD428E
#CD8042
#CD8042
Square
Four colors evenly spaced 90° apart
#43CD80
#43CD80
#4249CD
#4249CD
#CD428E
#CD428E
#CDC642
#CDC642
Seagreen3 in every color space
Full conversion of Seagreen3 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
#43CD80
RGB
rgb(67, 205, 128)
CMYK
cmyk(67%, 0%, 38%, 20%)
HSL
hsl(147, 58%, 53%)
HSV
hsv(147, 67%, 80%)
HWB
hwb(147 26% 20%)
CIE Lab
lab(73.8 -54.3 27.8)
OKLCH
oklch(75.6% 0.162 154.6)
XYZ (D65)
xyz(28.04, 46.41, 27.90)
Copy-ready code for Seagreen3
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: #43CD80;
background-color: #43CD80;CSS variable
:root {
--color-seagreen3: #43CD80;
}Tailwind config
// tailwind.config.js
colors: {
'seagreen3': '#43CD80',
}Sass
$color-seagreen3: #43CD80;Swift UIColor
UIColor(red: 0.263, green: 0.804, blue: 0.502, alpha: 1.0)Android XML
<color name="seagreen3">#43CD80</color>Closest match in every color system
The nearest Seagreen3 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 6021
#89AC76
Pale green
RAL 6018
#57A639
Yellow green
RAL 6019
#BDECB6
Pastel green
RAL 6017
#4C9141
May green
RAL 6027
#84C3BE
Light green
RAL 1000
#BEBD7F
Green beige
FAQ about Seagreen3
What is the HEX code for Seagreen3?
Seagreen3 (seagreen3) has the HEX code #43CD80. In RGB it is rgb(67, 205, 128), and in CMYK it is cmyk(67%, 0%, 38%, 20%).
What is the OKLCH value of Seagreen3?
Seagreen3 converts to oklch(0.756 0.162 154.6). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Seagreen3 accessible for body text?
Used as a background, Seagreen3 has a contrast ratio of 10.28:1 with black text and 2.04:1 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 Seagreen3?
The closest Pantone reference to Seagreen3 by ΔE2000 perceptual distance is Pantone 354 C (#00B140). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Seagreen3?
The closest RAL Classic reference to Seagreen3 by ΔE2000 distance is RAL 6021 (Pale green, #89AC76). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Seagreen3?
The complementary color (180° opposite on the HSL color wheel) of Seagreen3 is #CD428E. 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.