#181F63#181F63

#181F63 is a dark, moderate blue. Relative luminance 0.021; OKLCH L 28.4% C 0.119 H 271.8°. Best body text is #FFFFFF at 14.84:1 contrast (WCAG AA passes).

Color values

HEX	#181F63
RGB	rgb(24, 31, 99)
HSL	hsl(234, 61%, 24%)
HSV	hsv(234, 76%, 39%)
CMYK	cmyk(75.8%, 68.7%, 0%, 61.2%)
CIE-LAB	lab(15.87, 22.67, -41.03)
CIE-LCH	lch(15.87, 46.88, 298.92°)
OKLab	oklab(28.39% 0.0037 -0.1185)
OKLCH	oklch(28.39% 0.119 271.8)
XYZ	xyz(3.1180, 2.0747, 12.0381)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F63 #635C18

analogous

#184563 #181F63 #371863

triadic

#181F63 #63181F #1F6318

tetradic

#181F63 #631845 #635C18 #186337

square

#181F63 #631845 #635C18 #186337

split-complementary

#181F63 #633718 #456318

monochromatic

#060819 #0C1032 #181F63 #242E94 #303EC6

Accessibility & contrast

On white

14.84

#181F63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#181F63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F63

14.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F63	#FFFFFF	#000000	##FFFFFF
##181F63	1.00	14.84	1.42	14.84
#FFFFFF	14.84	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B65

Deuteranopia (green-blind)

#002462

Tritanopia (blue-blind)

#00313E

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #181f63;
/* rgb */ color: rgb(24, 31, 99);
/* oklch */ color: oklch(28.4% 0.119 271.8);

Tailwind

colors: {
  custom: {
    50: '#615a90',
    500: '#181f63',
    950: '#000000',
  },
}

SCSS

$custom: #181f63;
$custom-light: #615a90;
$custom-dark: #000000;

JSON

{
  "hex": "#181f63",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 99
  },
  "hsl": {
    "h": 234.4,
    "s": 60.976,
    "l": 24.118
  },
  "oklch": {
    "l": 0.2839,
    "c": 0.11861,
    "h": 271.8
  },
  "luminance": 0.02075
}

Semantic roles & 50–950 ramp

primary

#181F63

secondary

#99913E

accent

#D544E4

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06040D

muted

#7A797D

Preview Lab

Preview with #181F63

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

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