#181A52#181A52

#181A52 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.7% C 0.100 H 275.3°. Best body text is #FFFFFF at 16.05:1 contrast (WCAG AA passes).

Color values

HEX	#181A52
RGB	rgb(24, 26, 82)
HSL	hsl(238, 55%, 21%)
HSV	hsv(238, 71%, 32%)
CMYK	cmyk(70.7%, 68.3%, 0%, 67.8%)
CIE-LAB	lab(12.87, 19.51, -34.54)
CIE-LCH	lch(12.87, 39.67, 299.46°)
OKLab	oklab(25.68% 0.0092 -0.0995)
OKLCH	oklch(25.68% 0.1 275.3)
XYZ	xyz(2.2686, 1.5420, 8.1591)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A52 #525018

analogous

#183752 #181A52 #331852

triadic

#181A52 #52181A #1A5218

tetradic

#181A52 #521837 #525018 #185233

square

#181A52 #521837 #525018 #185233

split-complementary

#181A52 #523318 #375218

monochromatic

#070818 #0A0B23 #181A52 #262981 #3438B1

Accessibility & contrast

On white

16.05

#181A52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#181A52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A52

16.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A52	#FFFFFF	#000000	##FFFFFF
##181A52	1.00	16.05	1.31	16.05
#FFFFFF	16.05	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002454

Deuteranopia (green-blind)

#001F51

Tritanopia (blue-blind)

#002833

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181a52;
/* rgb */ color: rgb(24, 26, 82);
/* oklch */ color: oklch(25.7% 0.100 275.3);

Tailwind

colors: {
  custom: {
    50: '#5d5683',
    500: '#181a52',
    950: '#000000',
  },
}

SCSS

$custom: #181a52;
$custom-light: #5d5683;
$custom-dark: #000000;

JSON

{
  "hex": "#181a52",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 82
  },
  "hsl": {
    "h": 237.931,
    "s": 54.717,
    "l": 20.784
  },
  "oklch": {
    "l": 0.25682,
    "c": 0.09996,
    "h": 275.3
  },
  "luminance": 0.01542
}

Semantic roles & 50–950 ramp

primary

#181A52

secondary

#89863D

accent

#D94ADE

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181A52

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

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