CSS named color
Forest Green #228B22
The CSS keyword forestgreen is #228B22. It is a soft green in the green family. In OKLCH it sits at lightness 0.558, chroma 0.169 and hue 142.9°.
- Relative luminance
- 0.1892
- OKLCH L · C · h
- 0.558 · 0.169 · 142.9
- Best text
- Black 4.78:1
- Hue family
- Green
#228B22 color codes
- HEX
#228B22- RGB
rgb(34, 139, 34)- HSL
hsl(120, 61%, 34%)- OKLCH
oklch(0.558 0.169 142.9)- OKLab
oklab(0.558 -0.135 0.102)- CIELAB (D65)
L* 50.59, a* -49.59, b* 45.02- XYZ (D65)
X 10.18, Y 18.92, Z 4.63- CMYK (naive)
cmyk(76%, 0%, 76%, 45%)
CIELAB and XYZ use the D65 white point; CSS lab() uses D50, so paste the OKLCH or HEX value into stylesheets. CMYK here is a plain formula with no press profile.
Legibility
Contrast: is #228B22 accessible?
Black text on it reaches 4.78:1, passing AA. White text manages only 4.38:1, enough for large text only.
WCAG 2 gives the same ratio whichever color is the text; APCA does not, so its Lc changes sign and size with polarity.
Open the Contrast System-
Black text on it
4.78:1
- AA passes
- AA large passes
- AAA fails
- APCA Lc +34
-
White text on it
4.38:1
- AA fails
- AA large passes
- AAA fails
- APCA Lc −75
-
As text on black
4.78:1
- AA passes
- AA large passes
- AAA fails
- APCA Lc −31
-
As text on white
4.38:1
- AA fails
- AA large passes
- AAA fails
- APCA Lc +69
Nearest versions that pass 4.5:1
-
For text on white
#208920 4.50:1
Darkening its OKLCH lightness from 0.56 to 0.55 reaches 4.50:1 on white, keeping the hue.
-
For text on black
#228B22 4.78:1
It already reaches 4.78:1 on black, so no change is needed.
Checking another pair? Use the Contrast Checker.
Studio
Adjust #228B22 live
Move lightness, chroma and hue in OKLCH, or drag on the map. The map is every lightness and chroma at the current hue: sRGB inside the solid area, Display P3 out to the dashed line.
Scale
Shades and tints of #228B22
Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #228B22 sits at step 600.
Under each step, white and black text on it; a bold figure passes 4.5:1.
Gamut
How vivid #228B22 can get
At its lightness and hue, sRGB reaches OKLCH chroma 0.187; #228B22 uses 90% of it. Display P3, which many recent phones and laptops show, reaches 0.226 there: 21% more.
- sRGB
- Display P3
- Rec. 2020
- Dominant wavelength
- OKLCH chroma
- 0.169
- sRGB edge
- 0.187
- Display P3 edge
- 0.226
- Rec. 2020 edge
- 0.235
- Dominant wavelength
- 549 nm
- Excitation purity
- 63%
- Chromaticity
- x 0.3018, y 0.5609
- This color#228B22
- Most vivid in sRGB#008D09
- Most vivid in Display P3oklch(0.558 0.226 142.9)
On a screen without Display P3 the last tile shows the sRGB edge instead.
.accent {
color: #228b22;
}
@media (color-gamut: p3) {
.accent { color: color(display-p3 0.166 0.5587 0); }
}Mixing
Mixing #228B22
Each row is the same mix worked out in a different space, with the halfway color at its end. sRGB, which older CSS gradients use, can sag gray or dark in the middle; OKLab keeps the lightness steps even; OKLCH holds chroma and hue as it goes.
White #FFFFFF
- sRGB50%#91C591
- OKLab50%#98C594
- OKLCH50%#98C594
Black #000000
- sRGB50%#114611
- OKLab50%#073207
- OKLCH50%#073207
Its complement #A14AAC
- sRGB50%#626B67
- OKLab50%#747474
- OKLCH50%#B25700
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #228b22, white);
color: color-mix(in oklch, #228b22 50%, white);In use
#228B22 in an interface
A button, a link, a heading, a focused field, an icon and a chart line in this color, on a light page and a dark one. Each check is a WCAG 2 contrast minimum: 1.4.3 for text, 1.4.11 for the rest.
Light page
- Button labelText, 4.5:14.78:1 Passes
- Link and body-size textText, 4.5:14.38:1 Fails
- Large headingLarge text, 3:14.38:1 Passes
- Icons, borders and focus ringsNon-text, 3:14.38:1 Passes
For text on this page, the nearest shade that passes is #208920 4.50:1
Dark page
- Button labelText, 4.5:14.78:1 Passes
- Link and body-size textText, 4.5:14.26:1 Fails
- Large headingLarge text, 3:14.26:1 Passes
- Icons, borders and focus ringsNon-text, 3:14.26:1 Passes
For text on this page, the nearest shade that passes is #289028 4.55:1
Color vision
How #228B22 looks with color blindness
Achromatopsia changes it most, ΔE2000 26.9; tritanopia changes it least, 20.2.
Simulated with Machado et al. (2009) at full severity, in linear light.
Simulate a whole page What each type sees-
Protanopia
No working red (long-wavelength) cones
#8E7D0E ΔE2000 23.5
Distinct
Reads as soft amber
-
Deuteranopia
No working green (medium-wavelength) cones
#82752D ΔE2000 21.9
Distinct
Reads as muted amber
-
Tritanopia
No working blue (short-wavelength) cones
#008777 ΔE2000 20.2
Distinct
Reads as soft cyan
-
Achromatopsia
No cone color vision; lightness only
#787878 ΔE2000 26.9
Distinct
Reads as gray
Pairing check
Checked against its complement, #A14AAC. Their lightness contrast is only 1.16:1, so where hue collapses, add a label, icon or pattern.
| Vision | The pair | ΔE2000 | Verdict |
|---|---|---|---|
| Normal vision | #228B22 · #A14AAC | 79.3 | Stays distinct |
| Protanopia | #8E7D0E · #3A67AF | 53.1 | Stays distinct |
| Deuteranopia | #82752D · #5771A9 | 44.8 | Stays distinct |
| Tritanopia | #008777 · #A35874 | 50.6 | Stays distinct |
| Achromatopsia | #787878 · #6E6E6E | 4.0 | Easily confused |
Harmony
Color harmonies for #228B22
Its complement is #A14AAC, a soft magenta.
Hue rotations in OKLCH, mapped into sRGB by trimming chroma so hue and lightness stay put.
Open the Harmony Studio- Base#228B22
- Complement#A14AAC
Complementary
Open in Harmony Studio- −30°#757B00
- Base#228B22
- +30°#00886E
Analogous
Open in Harmony Studio- Base#228B22
- +120°#3C6DD5
- +240°#C33E42
Triadic
Open in Harmony Studio- Base#228B22
- +150°#7A5ACC
- +210°#B93F7C
Split-complementary
Open in Harmony StudioCode
Design tokens
Ready-to-paste tokens in six formats. Rename them to fit your system.
:root {
--color-forestgreen: #228b22;
}// tailwind.config.js
module.exports = {
theme: {
extend: {
colors: {
forestgreen: '#228b22',
},
},
},
};/* app.css — Tailwind CSS v4 */
@import "tailwindcss";
@theme {
--color-forestgreen: oklch(0.558 0.169 142.9);
}{
"color": {
"forestgreen": {
"$type": "color",
"$value": {
"colorSpace": "srgb",
"components": [0.1333, 0.5451, 0.1333],
"hex": "#228b22"
},
"$description": "CSS named color forestgreen"
}
}
}import SwiftUI
enum Palette {
static let forestgreen = Color(.sRGB, red: 0.133, green: 0.545, blue: 0.133, opacity: 1)
}import androidx.compose.ui.graphics.Color
object Palette {
val Forestgreen = Color(0xFF228B22)
}Matches
The nearest match in each system
The closest CSS name, Tailwind shade, RAL Classic paint and Crayola crayon by ΔE2000; under 2 is hard to tell apart side by side. RAL and Crayola values approximate physical colors.
Tools
Open #228B22 in the tools
Each opens over this page. More colors live in the Color Library, and every color page is listed on the hub.
- Color InspectorEvery format, its names, contrast and color vision in one panel.
- Contrast SystemBlack and white text on this color, with fixes in both directions.
- Harmony StudioPalettes built from this color, walked to a contrast target if you ask.
- Color Space ConverterThe same color in 34 notations, with its gamut headroom.
- Color Name FinderThe nearest of 1,055 color names by ΔE2000.