Springgreen3
springgreen3 · #00CD66
HEX
#00CD66
RGB
rgb(0, 205, 102)
CMYK
cmyk(100%, 0%, 50%, 20%)
HSL
hsl(150, 100%, 40%)
LAB
lab(72.6, -65.0, 39.3)
What is Springgreen3?
Springgreen3 is the springgreen3 reference in the X11 named colors. Its sRGB value is #00CD66 (rgb 0, 205, 102). 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 Springgreen3 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Springgreen3
An 11-step tonal scale derived from Springgreen3 (#00CD66). 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
#EBFBF3
#EBFBF3
100
#D6F7E7
#D6F7E7
200
#ADEFCE
#ADEFCE
300
#80E6B3
#80E6B3
400
#40DA8C
#40DA8C
500
#00CD66
#00CD66
600
#00AE57
#00AE57
700
#008542
#008542
800
#005C2E
#005C2E
900
#00331A
#00331A
950
#00190C
#00190C
Lighter tints (mixed with white)
15%
#6CD68C
30%
#95DEA8
45%
#B3E5BF
60%
#CBEDD3
75%
#E1F4E5
Darker shades (mixed with black)
15%
#00BF5E
30%
#00AF56
45%
#009D4C
60%
#008741
75%
#006D33
Color harmonies for Springgreen3
Classic color-theory harmonies derived from rotating the hue of Springgreen3. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#00CD66
#00CD66
#CC0066
#CC0066
Triadic
Three colors 120° apart
#00CD66
#00CD66
#6600CC
#6600CC
#CC6600
#CC6600
Analogous
Two neighbors ±30° on the wheel
#00CC00
#00CC00
#00CD66
#00CD66
#00CCCC
#00CCCC
Split-complementary
Base + two colors flanking its complement
#00CD66
#00CD66
#CC00CC
#CC00CC
#CC0000
#CC0000
Tetradic
Two complementary pairs
#00CD66
#00CD66
#0066CC
#0066CC
#CC0066
#CC0066
#CC6600
#CC6600
Square
Four colors evenly spaced 90° apart
#00CD66
#00CD66
#0000CC
#0000CC
#CC0066
#CC0066
#CCCC00
#CCCC00
Springgreen3 in every color space
Full conversion of Springgreen3 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
#00CD66
RGB
rgb(0, 205, 102)
CMYK
cmyk(100%, 0%, 50%, 20%)
HSL
hsl(150, 100%, 40%)
HSV
hsv(150, 100%, 80%)
HWB
hwb(150 0% 20%)
CIE Lab
lab(72.6 -65.0 39.3)
OKLCH
oklch(74.2% 0.199 151.3)
XYZ (D65)
xyz(24.23, 44.62, 19.90)
Copy-ready code for Springgreen3
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: #00CD66;
background-color: #00CD66;CSS variable
:root {
--color-springgreen3: #00CD66;
}Tailwind config
// tailwind.config.js
colors: {
'springgreen3': '#00CD66',
}Sass
$color-springgreen3: #00CD66;Swift UIColor
UIColor(red: 0.000, green: 0.804, blue: 0.400, alpha: 1.0)Android XML
<color name="springgreen3">#00CD66</color>Closest match in every color system
The nearest Springgreen3 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 6018
#57A639
Yellow green
RAL 6021
#89AC76
Pale green
RAL 6019
#BDECB6
Pastel green
RAL 6017
#4C9141
May green
RAL 6024
#308446
Traffic green
RAL 1000
#BEBD7F
Green beige
FAQ about Springgreen3
What is the HEX code for Springgreen3?
Springgreen3 (springgreen3) has the HEX code #00CD66. In RGB it is rgb(0, 205, 102), and in CMYK it is cmyk(100%, 0%, 50%, 20%).
What is the OKLCH value of Springgreen3?
Springgreen3 converts to oklch(0.742 0.199 151.3). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Springgreen3 accessible for body text?
Used as a background, Springgreen3 has a contrast ratio of 9.92:1 with black text and 2.12:1 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 Springgreen3?
The closest Pantone reference to Springgreen3 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 Springgreen3?
The closest RAL Classic reference to Springgreen3 by ΔE2000 distance is RAL 6018 (Yellow green, #57A639). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Springgreen3?
The complementary color (180° opposite on the HSL color wheel) of Springgreen3 is #CC0066. 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.