#181C60#181C60

#181C60 is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.5% C 0.118 H 273.0°. Best body text is #FFFFFF at 15.29:1 contrast (WCAG AA passes).

Color values

HEX	#181C60
RGB	rgb(24, 28, 96)
HSL	hsl(237, 60%, 24%)
HSV	hsv(237, 75%, 38%)
CMYK	cmyk(75%, 70.8%, 0%, 62.4%)
CIE-LAB	lab(14.78, 23.60, -40.83)
CIE-LCH	lch(14.78, 47.16, 300.02°)
OKLab	oklab(27.5% 0.0063 -0.118)
OKLCH	oklch(27.5% 0.118 273)
XYZ	xyz(2.9026, 1.8689, 11.2718)
Luminance	0.0187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C60 #605C18

analogous

#184060 #181C60 #381860

triadic

#181C60 #60181C #1C6018

tetradic

#181C60 #601840 #605C18 #186038

square

#181C60 #601840 #605C18 #186038

split-complementary

#181C60 #603818 #406018

monochromatic

#060718 #0C0E2F #181C60 #242A91 #3039C2

Accessibility & contrast

On white

15.29

#181C60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#181C60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C60

15.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C60	#FFFFFF	#000000	##FFFFFF
##181C60	1.00	15.29	1.37	15.29
#FFFFFF	15.29	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002962

Deuteranopia (green-blind)

#00225F

Tritanopia (blue-blind)

#002E3B

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181c60;
/* rgb */ color: rgb(24, 28, 96);
/* oklch */ color: oklch(27.5% 0.118 273.0);

Tailwind

colors: {
  custom: {
    50: '#61588e',
    500: '#181c60',
    950: '#000000',
  },
}

SCSS

$custom: #181c60;
$custom-light: #61588e;
$custom-dark: #000000;

JSON

{
  "hex": "#181c60",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 96
  },
  "hsl": {
    "h": 236.667,
    "s": 60,
    "l": 23.529
  },
  "oklch": {
    "l": 0.27503,
    "c": 0.11815,
    "h": 273
  },
  "luminance": 0.01869
}

Semantic roles & 50–950 ramp

primary

#181C60

secondary

#96913D

accent

#DA45E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #181C60

Body copy rendered with the generated semantic roles for this colour.

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