Colour reference

Sunglow

#ffd166

RGB: rgb(255 209 102)
HSL: 42°, 100%, 70%
OKLCh: 88.0% 0.135 86.1

Sunglow in every format

Web & CSSThe everyday formats for stylesheets and design tools.

Hex	`#ffd166`
RGB	`rgb(255 209 102)`
RGB legacy	`rgb(255, 209, 102)`
RGB percent	`rgb(100% 81.96% 40%)`
HSL	`hsl(42 100% 70%)`
HSL legacy	`hsl(42, 100%, 70%)`
HSV / HSB	`hsv(42, 60%, 100%)`
HWB	`hwb(42 40% 0%)`
Nearest name	`khaki (approx.)`
CMYK	`cmyk(0%, 18%, 60%, 0%)`Naive conversion. Real print work needs an ICC profile.

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

OKLCh	`oklch(88.03% 0.13478 86.062)`Modern CSS colour space for even palettes — better than HSL when building scales.
OKLab	`oklab(88.03% 0.00926 0.13446)`
CIE LCh	`lch(86.387% 58.812 82.003)`
CIE Lab	`lab(86.387% 8.182 58.241)`
Display P3	`color(display-p3 0.9712 0.8264 0.4664)`
Rec. 2020	`color(rec2020 0.9187 0.8106 0.4232)`
srgb-linear	`color(srgb-linear 1 0.6376 0.1329)`Light-linear sRGB — the same numbers a shader wants for maths.
CIE XYZ (D65)	`color(xyz-d65 0.6644 0.6782 0.2216)`

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

GLSL vec3 — sRGB	`vec3(1.0, 0.82, 0.4)`Encoded values. Use when writing straight to the framebuffer.
GLSL vec3 — linear	`vec3(1.0, 0.638, 0.133)`Light-linear values. Use for lighting, blending and mixing.
GLSL vec4 — sRGB	`vec4(1.0, 0.82, 0.4, 1.0)`
GLSL vec4 — linear	`vec4(1.0, 0.638, 0.133, 1.0)`
GLSL ivec3	`ivec3(255, 209, 102)`
HLSL float3 — sRGB	`float3(1.0, 0.82, 0.4)`
HLSL float3 — linear	`float3(1.0, 0.638, 0.133)`
HLSL float4 — sRGB	`float4(1.0, 0.82, 0.4, 1.0)`
HLSL half4 — sRGB	`half4(1.0, 0.82, 0.4, 1.0)`
WGSL vec3f — sRGB	`vec3f(1.0, 0.82, 0.4)`
WGSL vec4f — sRGB	`vec4f(1.0, 0.82, 0.4, 1.0)`
WGSL vec3<f32> — linear	`vec3<f32>(1.0, 0.638, 0.133)`

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

Unity Color	`new Color(1.0f, 0.82f, 0.4f, 1.0f)`Color for everyday scripting (0–1). Color32 when you need whole numbers from 0 to 255.
Unity Color32	`new Color32(255, 209, 102, 255)`
Unreal FLinearColor	`FLinearColor(1.0f, 0.6376f, 0.1329f, 1.0f)`FLinearColor for materials and lighting. FColor when you need whole numbers from 0 to 255.
Unreal FColor	`FColor(255, 209, 102, 255)`Whole numbers from 0 to 255 — use when an API asks for FColor, not FLinearColor.
Godot Color	`Color(1, 0.82, 0.4, 1)`
Flutter Color	`Color(0xFFFFD166)`Packed ARGB, so alpha comes first.
Android Color	`Color.rgb(255, 209, 102)`
SwiftUI Color	`Color(red: 1, green: 0.82, blue: 0.4)`
UIKit UIColor	`UIColor(red: 1, green: 0.82, blue: 0.4, alpha: 1)`

Raw valuesPacked integers and plain arrays.

0x hex	`0xFFD166`
0x hex (ARGB)	`0xFFFFD166`
Array 0–1	`[1, 0.82, 0.4]`
Array 0–255	`[255, 209, 102]`
Decimal integer	`16765286`

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
Sunglow on white	1.44:1	Fail	Lc 21	Not usable for text
Sunglow on black	14.56:1	AAA	Lc 82	Body text, 18px and up

Sunglow text on a white background

Sunglow text on a black background

White text on Sunglow

Black text on Sunglow

Tonal scale

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

50#fff5c0
100#ffe99a
200#fed782
300#e9c062
400#cda338
500#af8400
600#936a00
700#775400
800#5f4200
900#4c3300
950#2d1c00

Tints and shades

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

Tint 1#ffd984
Tint 2#ffe19f
Tint 3#ffe9b8
Tint 4#fff0d0
Tint 5#fff8e8
Shade 1#c8a44e
Shade 2#947838
Shade 3#635023
Shade 4#362a0f
Shade 5#0f0a02

Colours that work with Sunglow

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

#bfd7ff
#49f0ff
#ffb8ff
#ffc696
#d3e376

Closest CSS names

khakiΔEok 0.054
goldΔEok 0.054
navajowhiteΔEok 0.073
palegoldenrodΔEok 0.075
wheatΔEok 0.079
moccasinΔEok 0.084