#181B60#181B60

#181B60 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.3% C 0.119 H 273.4°. Best body text is #FFFFFF at 15.39:1 contrast (WCAG AA passes).

Color values

HEX	#181B60
RGB	rgb(24, 27, 96)
HSL	hsl(238, 60%, 24%)
HSV	hsv(238, 75%, 38%)
CMYK	cmyk(75%, 71.9%, 0%, 62.4%)
CIE-LAB	lab(14.53, 24.29, -41.26)
CIE-LCH	lch(14.53, 47.88, 300.49°)
OKLab	oklab(27.32% 0.007 -0.1192)
OKLCH	oklch(27.32% 0.119 273.4)
XYZ	xyz(2.8792, 1.8223, 11.2641)
Luminance	0.0182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B60 #605D18

analogous

#183F60 #181B60 #391860

triadic

#181B60 #60181B #1B6018

tetradic

#181B60 #60183F #605D18 #186039

square

#181B60 #60183F #605D18 #186039

split-complementary

#181B60 #603918 #3F6018

monochromatic

#060718 #0C0D2F #181B60 #242991 #3037C2

Accessibility & contrast

On white

15.39

#181B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#181B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B60

15.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B60	#FFFFFF	#000000	##FFFFFF
##181B60	1.00	15.39	1.36	15.39
#FFFFFF	15.39	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002862

Deuteranopia (green-blind)

#00215F

Tritanopia (blue-blind)

#002D3B

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181b60;
/* rgb */ color: rgb(24, 27, 96);
/* oklch */ color: oklch(27.3% 0.119 273.4);

Tailwind

colors: {
  custom: {
    50: '#61578e',
    500: '#181b60',
    950: '#000000',
  },
}

SCSS

$custom: #181b60;
$custom-light: #61578e;
$custom-dark: #000000;

JSON

{
  "hex": "#181b60",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 96
  },
  "hsl": {
    "h": 237.5,
    "s": 60,
    "l": 23.529
  },
  "oklch": {
    "l": 0.27315,
    "c": 0.11942,
    "h": 273.4
  },
  "luminance": 0.01823
}

Semantic roles & 50–950 ramp

primary

#181B60

secondary

#96933D

accent

#DD45E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #181B60

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

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