Chartreuse4
chartreuse4 · #458B00
HEX
#458B00
RGB
rgb(69, 139, 0)
CMYK
cmyk(50%, 0%, 100%, 45%)
HSL
hsl(90, 100%, 27%)
LAB
lab(51.5, -42.5, 54.8)
What is Chartreuse4?
Chartreuse4 is the chartreuse4 reference in the X11 named colors. Its sRGB value is #458B00 (rgb 69, 139, 0). 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 Chartreuse4 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Chartreuse4
An 11-step tonal scale derived from Chartreuse4 (#458B00). 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
#F0F6EB
#F0F6EB
100
#E1ECD6
#E1ECD6
200
#C3DAAD
#C3DAAD
300
#A2C580
#A2C580
400
#74A840
#74A840
500
#458B00
#458B00
600
#3B7600
#3B7600
700
#2D5A00
#2D5A00
800
#1F3F00
#1F3F00
900
#112300
#112300
950
#081100
#081100
Lighter tints (mixed with white)
15%
#7CA46C
30%
#9EB895
45%
#B9CAB3
60%
#CFDACB
75%
#E3E9E1
Darker shades (mixed with black)
15%
#408100
30%
#3A7600
45%
#336900
60%
#2B5A00
75%
#214800
Color harmonies for Chartreuse4
Classic color-theory harmonies derived from rotating the hue of Chartreuse4. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#458B00
#458B00
#45008A
#45008A
Triadic
Three colors 120° apart
#458B00
#458B00
#00458A
#00458A
#8A0045
#8A0045
Analogous
Two neighbors ±30° on the wheel
#8A8A00
#8A8A00
#458B00
#458B00
#008A00
#008A00
Split-complementary
Base + two colors flanking its complement
#458B00
#458B00
#00008A
#00008A
#8A008A
#8A008A
Tetradic
Two complementary pairs
#458B00
#458B00
#008A45
#008A45
#45008A
#45008A
#8A0045
#8A0045
Square
Four colors evenly spaced 90° apart
#458B00
#458B00
#008A8A
#008A8A
#45008A
#45008A
#8A0000
#8A0000
Chartreuse4 in every color space
Full conversion of Chartreuse4 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
#458B00
RGB
rgb(69, 139, 0)
CMYK
cmyk(50%, 0%, 100%, 45%)
HSL
hsl(90, 100%, 27%)
HSV
hsv(90, 100%, 55%)
HWB
hwb(90 0% 45%)
CIE Lab
lab(51.5 -42.5 54.8)
OKLCH
oklch(56.8% 0.167 135.4)
XYZ (D65)
xyz(11.69, 19.73, 3.19)
Copy-ready code for Chartreuse4
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: #458B00;
background-color: #458B00;CSS variable
:root {
--color-chartreuse4: #458B00;
}Tailwind config
// tailwind.config.js
colors: {
'chartreuse4': '#458B00',
}Sass
$color-chartreuse4: #458B00;Swift UIColor
UIColor(red: 0.271, green: 0.545, blue: 0.000, alpha: 1.0)Android XML
<color name="chartreuse4">#458B00</color>Closest match in every color system
The nearest Chartreuse4 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 6017
#4C9141
May green
RAL 6018
#57A639
Yellow green
RAL 6024
#308446
Traffic green
RAL 6001
#287233
Emerald green
RAL 6011
#587246
Reseda green
RAL 6010
#35682D
Grass green
FAQ about Chartreuse4
What is the HEX code for Chartreuse4?
Chartreuse4 (chartreuse4) has the HEX code #458B00. In RGB it is rgb(69, 139, 0), and in CMYK it is cmyk(50%, 0%, 100%, 45%).
What is the OKLCH value of Chartreuse4?
Chartreuse4 converts to oklch(0.568 0.167 135.4). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Chartreuse4 accessible for body text?
Used as a background, Chartreuse4 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 Chartreuse4?
The closest Pantone reference to Chartreuse4 by ΔE2000 perceptual distance is Pantone 370 C (#658D1B). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Chartreuse4?
The closest RAL Classic reference to Chartreuse4 by ΔE2000 distance is RAL 6017 (May green, #4C9141). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Chartreuse4?
The complementary color (180° opposite on the HSL color wheel) of Chartreuse4 is #45008A. 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.