#181F54#181F54

#181F54 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.096 H 272.5°. Best body text is #FFFFFF at 15.41:1 contrast (WCAG AA passes).

Color values

HEX	#181F54
RGB	rgb(24, 31, 84)
HSL	hsl(233, 56%, 21%)
HSV	hsv(233, 71%, 33%)
CMYK	cmyk(71.4%, 63.1%, 0%, 67.1%)
CIE-LAB	lab(14.48, 16.65, -33.28)
CIE-LCH	lch(14.48, 37.21, 296.58°)
OKLab	oklab(26.93% 0.0042 -0.0958)
OKLCH	oklch(26.93% 0.096 272.5)
XYZ	xyz(2.4664, 1.8140, 8.6060)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F54 #544D18

analogous

#183D54 #181F54 #2F1854

triadic

#181F54 #54181F #1F5418

tetradic

#181F54 #54183D #544D18 #18542F

square

#181F54 #54183D #544D18 #18542F

split-complementary

#181F54 #542F18 #3D5418

monochromatic

#070918 #0A0D24 #181F54 #263184 #3342B3

Accessibility & contrast

On white

15.41

#181F54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#181F54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F54

15.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F54	#FFFFFF	#000000	##FFFFFF
##181F54	1.00	15.41	1.36	15.41
#FFFFFF	15.41	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002756

Deuteranopia (green-blind)

#002253

Tritanopia (blue-blind)

#002C36

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181f54;
/* rgb */ color: rgb(24, 31, 84);
/* oklch */ color: oklch(26.9% 0.096 272.5);

Tailwind

colors: {
  custom: {
    50: '#5d5a85',
    500: '#181f54',
    950: '#000000',
  },
}

SCSS

$custom: #181f54;
$custom-light: #5d5a85;
$custom-dark: #000000;

JSON

{
  "hex": "#181f54",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 84
  },
  "hsl": {
    "h": 233,
    "s": 55.556,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26927,
    "c": 0.09588,
    "h": 272.5
  },
  "luminance": 0.01814
}

Semantic roles & 50–950 ramp

primary

#181F54

secondary

#8B823D

accent

#CD49DF

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181F54

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

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