CSS named colour

Slate Gray

#708090

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

RGB: rgb(112 128 144)
HSL: 210°, 13%, 50%
OKLCh: 59.3% 0.031 248.3

Slate Gray in every format

Web & CSSThe everyday formats for stylesheets and design tools.

Hex	`#708090`
RGB	`rgb(112 128 144)`
RGB legacy	`rgb(112, 128, 144)`
RGB percent	`rgb(43.92% 50.2% 56.47%)`
HSL	`hsl(210 12.6% 50.2%)`
HSL legacy	`hsl(210, 12.6%, 50.2%)`
HSV / HSB	`hsv(210, 22.2%, 56.5%)`
HWB	`hwb(210 43.9% 43.5%)`
Nearest name	`slategray`
CMYK	`cmyk(22.2%, 11.1%, 0%, 43.5%)`Naive conversion. Real print work needs an ICC profile.

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

OKLCh	`oklch(59.25% 0.03092 248.348)`Modern CSS colour space for even palettes — better than HSL when building scales.
OKLab	`oklab(59.25% -0.01141 -0.02874)`
CIE LCh	`lch(52.697% 11.234 253.003)`
CIE Lab	`lab(52.697% -3.284 -10.743)`
Display P3	`color(display-p3 0.4512 0.5 0.5586)`
Rec. 2020	`color(rec2020 0.4149 0.4487 0.512)`
srgb-linear	`color(srgb-linear 0.162 0.2159 0.2789)`Light-linear sRGB — the same numbers a shader wants for maths.
CIE XYZ (D65)	`color(xyz-d65 0.1943 0.209 0.294)`

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

GLSL vec3 — sRGB	`vec3(0.439, 0.502, 0.565)`Encoded values. Use when writing straight to the framebuffer.
GLSL vec3 — linear	`vec3(0.162, 0.216, 0.279)`Light-linear values. Use for lighting, blending and mixing.
GLSL vec4 — sRGB	`vec4(0.439, 0.502, 0.565, 1.0)`
GLSL vec4 — linear	`vec4(0.162, 0.216, 0.279, 1.0)`
GLSL ivec3	`ivec3(112, 128, 144)`
HLSL float3 — sRGB	`float3(0.439, 0.502, 0.565)`
HLSL float3 — linear	`float3(0.162, 0.216, 0.279)`
HLSL float4 — sRGB	`float4(0.439, 0.502, 0.565, 1.0)`
HLSL half4 — sRGB	`half4(0.439, 0.502, 0.565, 1.0)`
WGSL vec3f — sRGB	`vec3f(0.439, 0.502, 0.565)`
WGSL vec4f — sRGB	`vec4f(0.439, 0.502, 0.565, 1.0)`
WGSL vec3<f32> — linear	`vec3<f32>(0.162, 0.216, 0.279)`

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

Unity Color	`new Color(0.439f, 0.502f, 0.565f, 1.0f)`Color for everyday scripting (0–1). Color32 when you need whole numbers from 0 to 255.
Unity Color32	`new Color32(112, 128, 144, 255)`
Unreal FLinearColor	`FLinearColor(0.162f, 0.2159f, 0.2789f, 1.0f)`FLinearColor for materials and lighting. FColor when you need whole numbers from 0 to 255.
Unreal FColor	`FColor(112, 128, 144, 255)`Whole numbers from 0 to 255 — use when an API asks for FColor, not FLinearColor.
Godot Color	`Color(0.439, 0.502, 0.565, 1)`
Flutter Color	`Color(0xFF708090)`Packed ARGB, so alpha comes first.
Android Color	`Color.rgb(112, 128, 144)`
SwiftUI Color	`Color(red: 0.439, green: 0.502, blue: 0.565)`
UIKit UIColor	`UIColor(red: 0.439, green: 0.502, blue: 0.565, alpha: 1)`

Raw valuesPacked integers and plain arrays.

0x hex	`0x708090`
0x hex (ARGB)	`0xFF708090`
Array 0–1	`[0.439, 0.502, 0.565]`
Array 0–255	`[112, 128, 144]`
Decimal integer	`7372944`

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
Slate Gray on white	4.05:1	AA Large	Lc 68	Headings and large text
Slate Gray on black	5.18:1	AA	Lc 34	Non-text elements only

Slate Gray text on a white background

Slate Gray text on a black background

White text on Slate Gray

Black text on Slate Gray

Tonal scale

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

50#ecf9ff
100#e1effd
200#d0deed
300#b8c8d7
400#9babbc
500#7d8d9e
600#647383
700#4f5d6a
800#3d4956
900#2e3944
950#182029

Tints and shades

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

Tint 1#8694a2
Tint 2#9da9b4
Tint 3#b5bec6
Tint 4#cdd3d9
Tint 5#e6e9ec
Shade 1#566370
Shade 2#3e4851
Shade 3#272e34
Shade 4#12161a
Shade 5#020304

Colours that work with Slate Gray

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

#8b7b6b
#8f777a
#78826e
#6a838a
#797d91

Closest CSS names

slategrayexact match
lightslategrayΔEok 0.027
grayΔEok 0.032
steelblueΔEok 0.069
dimgrayΔEok 0.078
cadetblueΔEok 0.083