Seagreen1
seagreen1 · #54FF9F
HEX
#54FF9F
RGB
rgb(84, 255, 159)
CMYK
cmyk(67%, 0%, 38%, 0%)
HSL
hsl(146, 100%, 66%)
LAB
lab(89.8, -64.5, 33.4)
What is Seagreen1?
Seagreen1 is the seagreen1 reference in the X11 named colors. Its sRGB value is #54FF9F (rgb 84, 255, 159). 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 Seagreen1 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Seagreen1
An 11-step tonal scale derived from Seagreen1 (#54FF9F). 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
#F1FFF7
#F1FFF7
100
#E4FFF0
#E4FFF0
200
#C8FFE0
#C8FFE0
300
#AAFFCF
#AAFFCF
400
#7FFFB7
#7FFFB7
500
#54FF9F
#54FF9F
600
#47D987
#47D987
700
#37A667
#37A667
800
#267348
#267348
900
#154028
#154028
950
#0A1F13
#0A1F13
Lighter tints (mixed with white)
15%
#83FFB2
30%
#A2FFC3
45%
#BBFFD1
60%
#D1FFDF
75%
#E4FFEC
Darker shades (mixed with black)
15%
#4EED94
30%
#46DA87
45%
#3EC479
60%
#35AA68
75%
#298953
Color harmonies for Seagreen1
Classic color-theory harmonies derived from rotating the hue of Seagreen1. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#54FF9F
#54FF9F
#FF52B4
#FF52B4
Triadic
Three colors 120° apart
#54FF9F
#54FF9F
#9D52FF
#9D52FF
#FF9D52
#FF9D52
Analogous
Two neighbors ±30° on the wheel
#5DFF52
#5DFF52
#54FF9F
#54FF9F
#52FFF3
#52FFF3
Split-complementary
Base + two colors flanking its complement
#54FF9F
#54FF9F
#F352FF
#F352FF
#FF525D
#FF525D
Tetradic
Two complementary pairs
#54FF9F
#54FF9F
#52B4FF
#52B4FF
#FF52B4
#FF52B4
#FF9D52
#FF9D52
Square
Four colors evenly spaced 90° apart
#54FF9F
#54FF9F
#525DFF
#525DFF
#FF52B4
#FF52B4
#FFF352
#FFF352
Seagreen1 in every color space
Full conversion of Seagreen1 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
#54FF9F
RGB
rgb(84, 255, 159)
CMYK
cmyk(67%, 0%, 38%, 0%)
HSL
hsl(146, 100%, 66%)
HSV
hsv(146, 67%, 100%)
HWB
hwb(146 33% 0%)
CIE Lab
lab(89.8 -64.5 33.4)
OKLCH
oklch(89.0% 0.193 154.4)
XYZ (D65)
xyz(45.67, 75.90, 45.04)
Copy-ready code for Seagreen1
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: #54FF9F;
background-color: #54FF9F;CSS variable
:root {
--color-seagreen1: #54FF9F;
}Tailwind config
// tailwind.config.js
colors: {
'seagreen1': '#54FF9F',
}Sass
$color-seagreen1: #54FF9F;Swift UIColor
UIColor(red: 0.329, green: 1.000, blue: 0.624, alpha: 1.0)Android XML
<color name="seagreen1">#54FF9F</color>Closest match in every color system
The nearest Seagreen1 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 6019
#BDECB6
Pastel green
RAL 6021
#89AC76
Pale green
RAL 6018
#57A639
Yellow green
RAL 9002
#E7EBDA
Grey white
RAL 6027
#84C3BE
Light green
RAL 1000
#BEBD7F
Green beige
FAQ about Seagreen1
What is the HEX code for Seagreen1?
Seagreen1 (seagreen1) has the HEX code #54FF9F. In RGB it is rgb(84, 255, 159), and in CMYK it is cmyk(67%, 0%, 38%, 0%).
What is the OKLCH value of Seagreen1?
Seagreen1 converts to oklch(0.890 0.193 154.4). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Seagreen1 accessible for body text?
Used as a background, Seagreen1 has a contrast ratio of 16.18:1 with black text and 1.30:1 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 Seagreen1?
The closest Pantone reference to Seagreen1 by ΔE2000 perceptual distance is Pantone 367 C (#A4D65E). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Seagreen1?
The closest RAL Classic reference to Seagreen1 by ΔE2000 distance is RAL 6019 (Pastel green, #BDECB6). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Seagreen1?
The complementary color (180° opposite on the HSL color wheel) of Seagreen1 is #FF52B4. 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.