Colour reference

Persian Green

#2a9d8f

RGB: rgb(42 157 143)
HSL: 173°, 58%, 39%
OKLCh: 63.0% 0.101 183.0

Persian Green in every format

Web & CSSThe everyday formats for stylesheets and design tools.

Hex	`#2a9d8f`
RGB	`rgb(42 157 143)`
RGB legacy	`rgb(42, 157, 143)`
RGB percent	`rgb(16.47% 61.57% 56.08%)`
HSL	`hsl(172.7 57.8% 39%)`
HSL legacy	`hsl(172.7, 57.8%, 39%)`
HSV / HSB	`hsv(172.7, 73.2%, 61.6%)`
HWB	`hwb(172.7 16.5% 38.4%)`
Nearest name	`cadetblue (approx.)`
CMYK	`cmyk(73.2%, 0%, 8.9%, 38.4%)`Naive conversion. Real print work needs an ICC profile.

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

OKLCh	`oklch(63.042% 0.10131 183.031)`Modern CSS colour space for even palettes — better than HSL when building scales.
OKLab	`oklab(63.042% -0.10116 -0.00536)`
CIE LCh	`lch(58.369% 35.27 183.698)`
CIE Lab	`lab(58.369% -35.196 -2.275)`
Display P3	`color(display-p3 0.3112 0.607 0.561)`
Rec. 2020	`color(rec2020 0.3508 0.5541 0.5167)`
srgb-linear	`color(srgb-linear 0.0232 0.3372 0.2747)`Light-linear sRGB — the same numbers a shader wants for maths.
CIE XYZ (D65)	`color(xyz-d65 0.1797 0.2659 0.3017)`

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

GLSL vec3 — sRGB	`vec3(0.165, 0.616, 0.561)`Encoded values. Use when writing straight to the framebuffer.
GLSL vec3 — linear	`vec3(0.023, 0.337, 0.275)`Light-linear values. Use for lighting, blending and mixing.
GLSL vec4 — sRGB	`vec4(0.165, 0.616, 0.561, 1.0)`
GLSL vec4 — linear	`vec4(0.023, 0.337, 0.275, 1.0)`
GLSL ivec3	`ivec3(42, 157, 143)`
HLSL float3 — sRGB	`float3(0.165, 0.616, 0.561)`
HLSL float3 — linear	`float3(0.023, 0.337, 0.275)`
HLSL float4 — sRGB	`float4(0.165, 0.616, 0.561, 1.0)`
HLSL half4 — sRGB	`half4(0.165, 0.616, 0.561, 1.0)`
WGSL vec3f — sRGB	`vec3f(0.165, 0.616, 0.561)`
WGSL vec4f — sRGB	`vec4f(0.165, 0.616, 0.561, 1.0)`
WGSL vec3<f32> — linear	`vec3<f32>(0.023, 0.337, 0.275)`

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

Unity Color	`new Color(0.165f, 0.616f, 0.561f, 1.0f)`Color for everyday scripting (0–1). Color32 when you need whole numbers from 0 to 255.
Unity Color32	`new Color32(42, 157, 143, 255)`
Unreal FLinearColor	`FLinearColor(0.0232f, 0.3372f, 0.2747f, 1.0f)`FLinearColor for materials and lighting. FColor when you need whole numbers from 0 to 255.
Unreal FColor	`FColor(42, 157, 143, 255)`Whole numbers from 0 to 255 — use when an API asks for FColor, not FLinearColor.
Godot Color	`Color(0.165, 0.616, 0.561, 1)`
Flutter Color	`Color(0xFF2A9D8F)`Packed ARGB, so alpha comes first.
Android Color	`Color.rgb(42, 157, 143)`
SwiftUI Color	`Color(red: 0.165, green: 0.616, blue: 0.561)`
UIKit UIColor	`UIColor(red: 0.165, green: 0.616, blue: 0.561, alpha: 1)`

Raw valuesPacked integers and plain arrays.

0x hex	`0x2A9D8F`
0x hex (ARGB)	`0xFF2A9D8F`
Array 0–1	`[0.165, 0.616, 0.561]`
Array 0–255	`[42, 157, 143]`
Decimal integer	`2792847`

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
Persian Green on white	3.32:1	AA Large	Lc 60	Headings and large text
Persian Green on black	6.32:1	AA	Lc 41	Non-text elements only

Persian Green text on a white background

Persian Green text on a black background

White text on Persian Green

Black text on Persian Green

Tonal scale

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

50#c7fffb
100#b1fff2
200#9befe2
300#7dd9cb
400#57bdaf
500#2d9f91
600#008477
700#006b60
800#00564c
900#00453c
950#002822

Tints and shades

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

Tint 1#59ada1
Tint 2#7dbeb3
Tint 3#9fcec6
Tint 4#bfded8
Tint 5#dfefec
Shade 1#1f7a6f
Shade 2#145951
Shade 3#0a3a34
Shade 4#031d1a
Shade 5#000504

Colours that work with Persian Green

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

#bc6e83
#967abc
#b47b44
#559b6c
#2699ae

Closest CSS names

cadetblueΔEok 0.050
darkcyanΔEok 0.058
lightseagreenΔEok 0.063
seagreenΔEok 0.083
tealΔEok 0.090
mediumseagreenΔEok 0.090