#181A54#181A54

#181A54 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.9% C 0.103 H 275.0°. Best body text is #FFFFFF at 15.97:1 contrast (WCAG AA passes).

Color values

HEX	#181A54
RGB	rgb(24, 26, 84)
HSL	hsl(238, 56%, 21%)
HSV	hsv(238, 71%, 33%)
CMYK	cmyk(71.4%, 69%, 0%, 67.1%)
CIE-LAB	lab(13.06, 20.30, -35.59)
CIE-LCH	lch(13.06, 40.97, 299.70°)
OKLab	oklab(25.88% 0.009 -0.1026)
OKLCH	oklch(25.88% 0.103 275)
XYZ	xyz(2.3458, 1.5729, 8.5658)
Luminance	0.0157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A54 #545218

analogous

#183854 #181A54 #341854

triadic

#181A54 #54181A #1A5418

tetradic

#181A54 #541838 #545218 #185434

square

#181A54 #541838 #545218 #185434

split-complementary

#181A54 #543418 #385418

monochromatic

#070718 #0A0B24 #181A54 #262984 #3337B3

Accessibility & contrast

On white

15.97

#181A54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#181A54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A54

15.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A54	#FFFFFF	#000000	##FFFFFF
##181A54	1.00	15.97	1.31	15.97
#FFFFFF	15.97	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	15.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002456

Deuteranopia (green-blind)

#001F53

Tritanopia (blue-blind)

#002934

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181a54;
/* rgb */ color: rgb(24, 26, 84);
/* oklch */ color: oklch(25.9% 0.103 275.0);

Tailwind

colors: {
  custom: {
    50: '#5e5685',
    500: '#181a54',
    950: '#000000',
  },
}

SCSS

$custom: #181a54;
$custom-light: #5e5685;
$custom-dark: #000000;

JSON

{
  "hex": "#181a54",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 84
  },
  "hsl": {
    "h": 238,
    "s": 55.556,
    "l": 21.176
  },
  "oklch": {
    "l": 0.25882,
    "c": 0.10301,
    "h": 275
  },
  "luminance": 0.01573
}

Semantic roles & 50–950 ramp

primary

#181A54

secondary

#8B883D

accent

#DA49DF

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181A54

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

Preview Lab → · Contrast checker → · Palette generator →