CSS named colour

Dark Olive Green

#556b2f

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

RGB: rgb(85 107 47)
HSL: 82°, 39%, 30%
OKLCh: 49.6% 0.090 126.2

Dark Olive Green in every format

Web & CSSThe everyday formats for stylesheets and design tools.

Hex	`#556b2f`
RGB	`rgb(85 107 47)`
RGB legacy	`rgb(85, 107, 47)`
RGB percent	`rgb(33.33% 41.96% 18.43%)`
HSL	`hsl(82 39% 30.2%)`
HSL legacy	`hsl(82, 39%, 30.2%)`
HSV / HSB	`hsv(82, 56.1%, 42%)`
HWB	`hwb(82 18.4% 58%)`
Nearest name	`darkolivegreen`
CMYK	`cmyk(20.6%, 0%, 56.1%, 58%)`Naive conversion. Real print work needs an ICC profile.

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

OKLCh	`oklch(49.552% 0.0896 126.186)`Modern CSS colour space for even palettes — better than HSL when building scales.
OKLab	`oklab(49.552% -0.0529 0.07232)`
CIE LCh	`lch(42.359% 34.467 118.409)`
CIE Lab	`lab(42.359% -16.398 30.316)`
Display P3	`color(display-p3 0.3506 0.4171 0.2153)`
Rec. 2020	`color(rec2020 0.3022 0.3571 0.1586)`
srgb-linear	`color(srgb-linear 0.0908 0.147 0.0284)`Light-linear sRGB — the same numbers a shader wants for maths.
CIE XYZ (D65)	`color(xyz-d65 0.0952 0.1265 0.0463)`

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

GLSL vec3 — sRGB	`vec3(0.333, 0.42, 0.184)`Encoded values. Use when writing straight to the framebuffer.
GLSL vec3 — linear	`vec3(0.091, 0.147, 0.028)`Light-linear values. Use for lighting, blending and mixing.
GLSL vec4 — sRGB	`vec4(0.333, 0.42, 0.184, 1.0)`
GLSL vec4 — linear	`vec4(0.091, 0.147, 0.028, 1.0)`
GLSL ivec3	`ivec3(85, 107, 47)`
HLSL float3 — sRGB	`float3(0.333, 0.42, 0.184)`
HLSL float3 — linear	`float3(0.091, 0.147, 0.028)`
HLSL float4 — sRGB	`float4(0.333, 0.42, 0.184, 1.0)`
HLSL half4 — sRGB	`half4(0.333, 0.42, 0.184, 1.0)`
WGSL vec3f — sRGB	`vec3f(0.333, 0.42, 0.184)`
WGSL vec4f — sRGB	`vec4f(0.333, 0.42, 0.184, 1.0)`
WGSL vec3<f32> — linear	`vec3<f32>(0.091, 0.147, 0.028)`

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

Unity Color	`new Color(0.333f, 0.42f, 0.184f, 1.0f)`Color for everyday scripting (0–1). Color32 when you need whole numbers from 0 to 255.
Unity Color32	`new Color32(85, 107, 47, 255)`
Unreal FLinearColor	`FLinearColor(0.0908f, 0.147f, 0.0284f, 1.0f)`FLinearColor for materials and lighting. FColor when you need whole numbers from 0 to 255.
Unreal FColor	`FColor(85, 107, 47, 255)`Whole numbers from 0 to 255 — use when an API asks for FColor, not FLinearColor.
Godot Color	`Color(0.333, 0.42, 0.184, 1)`
Flutter Color	`Color(0xFF556B2F)`Packed ARGB, so alpha comes first.
Android Color	`Color.rgb(85, 107, 47)`
SwiftUI Color	`Color(red: 0.333, green: 0.42, blue: 0.184)`
UIKit UIColor	`UIColor(red: 0.333, green: 0.42, blue: 0.184, alpha: 1)`

Raw valuesPacked integers and plain arrays.

0x hex	`0x556B2F`
0x hex (ARGB)	`0xFF556B2F`
Array 0–1	`[0.333, 0.42, 0.184]`
Array 0–255	`[85, 107, 47]`
Decimal integer	`5597999`

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
Dark Olive Green on white	5.95:1	AA	Lc 80	Body text, 18px and up
Dark Olive Green on black	3.53:1	AA Large	Lc 22	Not usable for text

Dark Olive Green text on a white background

Dark Olive Green text on a black background

White text on Dark Olive Green

Black text on Dark Olive Green

Tonal scale

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

50#ecffd0
100#e2f7c4
200#d0e6b0
300#b8d097
400#9bb477
500#7d9558
600#657b41
700#4f632d
800#3d4f1d
900#2f3e11
950#182401

Tints and shades

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

Tint 1#6f8251
Tint 2#8a9a73
Tint 3#a6b394
Tint 4#c3ccb7
Tint 5#e1e5db
Shade 1#415223
Shade 2#2e3b17
Shade 3#1c250c
Shade 4#0b1103
Shade 5#010200

Colours that work with Dark Olive Green

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

#6f548a
#326692
#8c4b5a
#71611b
#30714c

Closest CSS names

darkolivegreenexact match
darkgreenΔEok 0.090
dimgrayΔEok 0.093
seagreenΔEok 0.094
greenΔEok 0.097
oliveΔEok 0.098