#181F64#181F64

#181F64 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.5% C 0.120 H 271.7°. Best body text is #FFFFFF at 14.80:1 contrast (WCAG AA passes).

Color values

HEX	#181F64
RGB	rgb(24, 31, 100)
HSL	hsl(234, 61%, 24%)
HSV	hsv(234, 76%, 39%)
CMYK	cmyk(76%, 69%, 0%, 60.8%)
CIE-LAB	lab(15.97, 23.07, -41.53)
CIE-LCH	lch(15.97, 47.51, 299.05°)
OKLab	oklab(28.49% 0.0036 -0.12)
OKLCH	oklch(28.49% 0.12 271.7)
XYZ	xyz(3.1661, 2.0939, 12.2914)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F64 #645D18

analogous

#184564 #181F64 #371864

triadic

#181F64 #64181F #1F6418

tetradic

#181F64 #641845 #645D18 #186437

square

#181F64 #641845 #645D18 #186437

split-complementary

#181F64 #643718 #456418

monochromatic

#060819 #0C1033 #181F64 #242E95 #303EC7

Accessibility & contrast

On white

14.80

#181F64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#181F64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F64

14.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F64	#FFFFFF	#000000	##FFFFFF
##181F64	1.00	14.80	1.42	14.80
#FFFFFF	14.80	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B66

Deuteranopia (green-blind)

#002463

Tritanopia (blue-blind)

#00313E

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181f64;
/* rgb */ color: rgb(24, 31, 100);
/* oklch */ color: oklch(28.5% 0.120 271.7);

Tailwind

colors: {
  custom: {
    50: '#625a91',
    500: '#181f64',
    950: '#000000',
  },
}

SCSS

$custom: #181f64;
$custom-light: #625a91;
$custom-dark: #000000;

JSON

{
  "hex": "#181f64",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 100
  },
  "hsl": {
    "h": 234.474,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.28492,
    "c": 0.12008,
    "h": 271.7
  },
  "luminance": 0.02094
}

Semantic roles & 50–950 ramp

primary

#181F64

secondary

#9A923E

accent

#D643E4

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06040D

muted

#7A797E

Preview Lab

Preview with #181F64

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

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