Colour reference

Zinc 500

#71717a

RGB: rgb(113 113 122)
HSL: 240°, 4%, 46%
OKLCh: 55.2% 0.014 285.9

Zinc 500 in every format

Web & CSSThe everyday formats for stylesheets and design tools.

Hex	`#71717a`
RGB	`rgb(113 113 122)`
RGB legacy	`rgb(113, 113, 122)`
RGB percent	`rgb(44.31% 44.31% 47.84%)`
HSL	`hsl(240 3.8% 46.1%)`
HSL legacy	`hsl(240, 3.8%, 46.1%)`
HSV / HSB	`hsv(240, 7.4%, 47.8%)`
HWB	`hwb(240 44.3% 52.2%)`
Nearest name	`dimgray (approx.)`
CMYK	`cmyk(7.4%, 7.4%, 0%, 52.2%)`Naive conversion. Real print work needs an ICC profile.

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

OKLCh	`oklch(55.166% 0.01381 285.938)`Modern CSS colour space for even palettes — better than HSL when building scales.
OKLab	`oklab(55.166% 0.00379 -0.01328)`
CIE LCh	`lch(47.87% 5.186 285.837)`
CIE Lab	`lab(47.87% 1.415 -4.989)`
Display P3	`color(display-p3 0.4431 0.4431 0.4754)`
Rec. 2020	`color(rec2020 0.3912 0.39 0.4233)`
srgb-linear	`color(srgb-linear 0.1651 0.1651 0.1946)`Light-linear sRGB — the same numbers a shader wants for maths.
CIE XYZ (D65)	`color(xyz-d65 0.1623 0.1673 0.2079)`

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

GLSL vec3 — sRGB	`vec3(0.443, 0.443, 0.478)`Encoded values. Use when writing straight to the framebuffer.
GLSL vec3 — linear	`vec3(0.165, 0.165, 0.195)`Light-linear values. Use for lighting, blending and mixing.
GLSL vec4 — sRGB	`vec4(0.443, 0.443, 0.478, 1.0)`
GLSL vec4 — linear	`vec4(0.165, 0.165, 0.195, 1.0)`
GLSL ivec3	`ivec3(113, 113, 122)`
HLSL float3 — sRGB	`float3(0.443, 0.443, 0.478)`
HLSL float3 — linear	`float3(0.165, 0.165, 0.195)`
HLSL float4 — sRGB	`float4(0.443, 0.443, 0.478, 1.0)`
HLSL half4 — sRGB	`half4(0.443, 0.443, 0.478, 1.0)`
WGSL vec3f — sRGB	`vec3f(0.443, 0.443, 0.478)`
WGSL vec4f — sRGB	`vec4f(0.443, 0.443, 0.478, 1.0)`
WGSL vec3<f32> — linear	`vec3<f32>(0.165, 0.165, 0.195)`

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

Unity Color	`new Color(0.443f, 0.443f, 0.478f, 1.0f)`Color for everyday scripting (0–1). Color32 when you need whole numbers from 0 to 255.
Unity Color32	`new Color32(113, 113, 122, 255)`
Unreal FLinearColor	`FLinearColor(0.1651f, 0.1651f, 0.1946f, 1.0f)`FLinearColor for materials and lighting. FColor when you need whole numbers from 0 to 255.
Unreal FColor	`FColor(113, 113, 122, 255)`Whole numbers from 0 to 255 — use when an API asks for FColor, not FLinearColor.
Godot Color	`Color(0.443, 0.443, 0.478, 1)`
Flutter Color	`Color(0xFF71717A)`Packed ARGB, so alpha comes first.
Android Color	`Color.rgb(113, 113, 122)`
SwiftUI Color	`Color(red: 0.443, green: 0.443, blue: 0.478)`
UIKit UIColor	`UIColor(red: 0.443, green: 0.443, blue: 0.478, alpha: 1)`

Raw valuesPacked integers and plain arrays.

0x hex	`0x71717A`
0x hex (ARGB)	`0xFF71717A`
Array 0–1	`[0.443, 0.443, 0.478]`
Array 0–255	`[113, 113, 122]`
Decimal integer	`7434618`

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 500 on white	4.83:1	AA	Lc 74	Headings and large text
Zinc 500 on black	4.35:1	AA Large	Lc 28	Not usable for text

Zinc 500 text on a white background

Zinc 500 text on a black background

White text on Zinc 500

Black text on Zinc 500

Tonal scale

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

50#f7f7fe
100#ecedf5
200#dbdbe4
300#c5c5ce
400#a8a8b2
500#8a8a94
600#717179
700#5a5a62
800#47474e
900#37373e
950#1f1f24

Tints and shades

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

Tint 1#87878f
Tint 2#9e9ea4
Tint 3#b5b5ba
Tint 4#cdcdd1
Tint 5#e6e6e8
Shade 1#57575e
Shade 2#3e3e44
Shade 3#27272b
Shade 4#121214
Shade 5#030303

Colours that work with Zinc 500

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

#73736a
#79706b
#6b7570
#6d737a
#757078

Closest CSS names

dimgrayΔEok 0.034
slategrayΔEok 0.046
grayΔEok 0.050
lightslategrayΔEok 0.071
tealΔEok 0.094
steelblueΔEok 0.096