Colour reference

Zinc 800

#27272a

RGB: rgb(39 39 42)
HSL: 240°, 4%, 16%
OKLCh: 27.4% 0.005 286.0

Zinc 800 in every format

Web & CSSThe everyday formats for stylesheets and design tools.

Hex	`#27272a`
RGB	`rgb(39 39 42)`
RGB legacy	`rgb(39, 39, 42)`
RGB percent	`rgb(15.29% 15.29% 16.47%)`
HSL	`hsl(240 3.7% 15.9%)`
HSL legacy	`hsl(240, 3.7%, 15.9%)`
HSV / HSB	`hsv(240, 7.1%, 16.5%)`
HWB	`hwb(240 15.3% 83.5%)`
Nearest name	`darkslategray (approx.)`
CMYK	`cmyk(7.1%, 7.1%, 0%, 83.5%)`Naive conversion. Real print work needs an ICC profile.

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

OKLCh	`oklch(27.394% 0.00548 286.033)`Modern CSS colour space for even palettes — better than HSL when building scales.
OKLab	`oklab(27.394% 0.00151 -0.00526)`
CIE LCh	`lch(15.728% 2.059 285.718)`
CIE Lab	`lab(15.728% 0.558 -1.982)`
Display P3	`color(display-p3 0.1529 0.1529 0.1637)`
Rec. 2020	`color(rec2020 0.0915 0.0911 0.1015)`
srgb-linear	`color(srgb-linear 0.0203 0.0203 0.0232)`Light-linear sRGB — the same numbers a shader wants for maths.
CIE XYZ (D65)	`color(xyz-d65 0.0198 0.0205 0.0248)`

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

GLSL vec3 — sRGB	`vec3(0.153, 0.153, 0.165)`Encoded values. Use when writing straight to the framebuffer.
GLSL vec3 — linear	`vec3(0.02, 0.02, 0.023)`Light-linear values. Use for lighting, blending and mixing.
GLSL vec4 — sRGB	`vec4(0.153, 0.153, 0.165, 1.0)`
GLSL vec4 — linear	`vec4(0.02, 0.02, 0.023, 1.0)`
GLSL ivec3	`ivec3(39, 39, 42)`
HLSL float3 — sRGB	`float3(0.153, 0.153, 0.165)`
HLSL float3 — linear	`float3(0.02, 0.02, 0.023)`
HLSL float4 — sRGB	`float4(0.153, 0.153, 0.165, 1.0)`
HLSL half4 — sRGB	`half4(0.153, 0.153, 0.165, 1.0)`
WGSL vec3f — sRGB	`vec3f(0.153, 0.153, 0.165)`
WGSL vec4f — sRGB	`vec4f(0.153, 0.153, 0.165, 1.0)`
WGSL vec3<f32> — linear	`vec3<f32>(0.02, 0.02, 0.023)`

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

Unity Color	`new Color(0.153f, 0.153f, 0.165f, 1.0f)`Color for everyday scripting (0–1). Color32 when you need whole numbers from 0 to 255.
Unity Color32	`new Color32(39, 39, 42, 255)`
Unreal FLinearColor	`FLinearColor(0.0203f, 0.0203f, 0.0232f, 1.0f)`FLinearColor for materials and lighting. FColor when you need whole numbers from 0 to 255.
Unreal FColor	`FColor(39, 39, 42, 255)`Whole numbers from 0 to 255 — use when an API asks for FColor, not FLinearColor.
Godot Color	`Color(0.153, 0.153, 0.165, 1)`
Flutter Color	`Color(0xFF27272A)`Packed ARGB, so alpha comes first.
Android Color	`Color.rgb(39, 39, 42)`
SwiftUI Color	`Color(red: 0.153, green: 0.153, blue: 0.165)`
UIKit UIColor	`UIColor(red: 0.153, green: 0.153, blue: 0.165, alpha: 1)`

Raw valuesPacked integers and plain arrays.

0x hex	`0x27272A`
0x hex (ARGB)	`0xFF27272A`
Array 0–1	`[0.153, 0.153, 0.165]`
Array 0–255	`[39, 39, 42]`
Decimal integer	`2565930`

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
Zinc 800 on white	14.89:1	AAA	Lc 102	Body text at any size
Zinc 800 on black	1.41:1	Fail	Lc 0	Not usable for text

Zinc 800 text on a white background

Zinc 800 text on a black background

White text on Zinc 800

Black text on Zinc 800

Tonal scale

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

50#f7f7fa
100#ededf0
200#dcdcdf
300#c5c5c9
400#a9a9ac
500#8b8b8e
600#717175
700#5a5a5e
800#47474a
900#38383a
950#1f1f21

Tints and shades

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

Tint 1#464649
Tint 2#67676a
Tint 3#8b8b8d
Tint 4#b0b0b1
Tint 5#d7d7d8
Shade 1#1c1c1f
Shade 2#121214
Shade 3#08080a
Shade 4#020203
Shade 5#000000

Colours that work with Zinc 800

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

#282825
#2a2725
#252827
#26282a
#282729

Closest CSS names

darkslategrayΔEok 0.135
midnightblueΔEok 0.139
navyΔEok 0.183
darkslateblueΔEok 0.184
indigoΔEok 0.186
maroonΔEok 0.187