CSS named colour

Forest Green

#228b22

A CSS named colour: forestgreen is valid anywhere a colour is expected.

RGB: rgb(34 139 34)
HSL: 120°, 61%, 34%
OKLCh: 55.8% 0.169 142.9

Forest Green in every format

Web & CSSThe everyday formats for stylesheets and design tools.

Hex	`#228b22`
RGB	`rgb(34 139 34)`
RGB legacy	`rgb(34, 139, 34)`
RGB percent	`rgb(13.33% 54.51% 13.33%)`
HSL	`hsl(120 60.7% 33.9%)`
HSL legacy	`hsl(120, 60.7%, 33.9%)`
HSV / HSB	`hsv(120, 75.5%, 54.5%)`
HWB	`hwb(120 13.3% 45.5%)`
Nearest name	`forestgreen`
CMYK	`cmyk(75.5%, 0%, 75.5%, 45.5%)`Naive conversion. Real print work needs an ICC profile.

Perceptual & wide gamutModern CSS colour spaces for uniform scales and P3 displays.

OKLCh	`oklch(55.78% 0.16878 142.893)`Modern CSS colour space for even palettes — better than HSL when building scales.
OKLab	`oklab(55.78% -0.13461 0.10183)`
CIE LCh	`lch(50.642% 63.472 136.075)`
CIE Lab	`lab(50.642% -45.716 44.032)`
Display P3	`color(display-p3 0.2694 0.5372 0.2014)`
Rec. 2020	`color(rec2020 0.2832 0.4777 0.151)`
srgb-linear	`color(srgb-linear 0.016 0.2582 0.016)`Light-linear sRGB — the same numbers a shader wants for maths.
CIE XYZ (D65)	`color(xyz-d65 0.1018 0.1892 0.0463)`

ShadersGLSL, HLSL and WGSL vectors in both encoded and linear form.

GLSL vec3 — sRGB	`vec3(0.133, 0.545, 0.133)`Encoded values. Use when writing straight to the framebuffer.
GLSL vec3 — linear	`vec3(0.016, 0.258, 0.016)`Light-linear values. Use for lighting, blending and mixing.
GLSL vec4 — sRGB	`vec4(0.133, 0.545, 0.133, 1.0)`
GLSL vec4 — linear	`vec4(0.016, 0.258, 0.016, 1.0)`
GLSL ivec3	`ivec3(34, 139, 34)`
HLSL float3 — sRGB	`float3(0.133, 0.545, 0.133)`
HLSL float3 — linear	`float3(0.016, 0.258, 0.016)`
HLSL float4 — sRGB	`float4(0.133, 0.545, 0.133, 1.0)`
HLSL half4 — sRGB	`half4(0.133, 0.545, 0.133, 1.0)`
WGSL vec3f — sRGB	`vec3f(0.133, 0.545, 0.133)`
WGSL vec4f — sRGB	`vec4f(0.133, 0.545, 0.133, 1.0)`
WGSL vec3<f32> — linear	`vec3<f32>(0.016, 0.258, 0.016)`

Engines & appsConstructors for Unity, Unreal, Godot, Flutter, SwiftUI and Android.

Unity Color	`new Color(0.133f, 0.545f, 0.133f, 1.0f)`Color for everyday scripting (0–1). Color32 when you need whole numbers from 0 to 255.
Unity Color32	`new Color32(34, 139, 34, 255)`
Unreal FLinearColor	`FLinearColor(0.016f, 0.2582f, 0.016f, 1.0f)`FLinearColor for materials and lighting. FColor when you need whole numbers from 0 to 255.
Unreal FColor	`FColor(34, 139, 34, 255)`Whole numbers from 0 to 255 — use when an API asks for FColor, not FLinearColor.
Godot Color	`Color(0.133, 0.545, 0.133, 1)`
Flutter Color	`Color(0xFF228B22)`Packed ARGB, so alpha comes first.
Android Color	`Color.rgb(34, 139, 34)`
SwiftUI Color	`Color(red: 0.133, green: 0.545, blue: 0.133)`
UIKit UIColor	`UIColor(red: 0.133, green: 0.545, blue: 0.133, alpha: 1)`

Raw valuesPacked integers and plain arrays.

0x hex	`0x228B22`
0x hex (ARGB)	`0xFF228B22`
Array 0–1	`[0.133, 0.545, 0.133]`
Array 0–255	`[34, 139, 34]`
Decimal integer	`2263842`

Contrast and accessibility

WCAG 2 ratios are what audits and legislation reference. APCA is shown alongside because WCAG 2 is known to misjudge mid-tone backgrounds, and it is the basis of the WCAG 3 draft.

Pairing	WCAG 2 ratio	Level	APCA	Suitable for
Forest Green on white	4.39:1	AA Large	Lc 70	Headings and large text
Forest Green on black	4.78:1	AA	Lc 32	Non-text elements only

Forest Green text on a white background

Forest Green text on a black background

White text on Forest Green

Black text on Forest Green

Tonal scale

Hue held fixed while lightness walks OKLCh, ready to use as a design system ramp.

50#d8ffd4
100#b8ffb3
200#a3f49e
300#87df82
400#64c360
500#40a43d
600#248823
700#066f0a
800#005900
900#004700
950#002a00

Tints and shades

Mixed perceptually toward white and black, so the steps feel evenly spaced.

Tint 1#509f4d
Tint 2#75b271
Tint 3#98c594
Tint 4#bad9b7
Tint 5#dcecdb
Shade 1#186c18
Shade 2#0f4e0f
Shade 3#073207
Shade 4#021902
Shade 5#000400

Colours that work with Forest Green

Complementary, triadic and analogous partners, rotated in OKLCh so they keep the same apparent brightness.

#a14aac
#3c6dd5
#c33e42
#767b00
#008b6c

Closest CSS names

forestgreenexact match
greenΔEok 0.039
seagreenΔEok 0.059
olivedrabΔEok 0.068
oliveΔEok 0.096
darkolivegreenΔEok 0.107