#181B63#181B63

#181B63 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.6% C 0.124 H 273.1°. Best body text is #FFFFFF at 15.26:1 contrast (WCAG AA passes).

Color values

HEX	#181B63
RGB	rgb(24, 27, 99)
HSL	hsl(238, 61%, 24%)
HSV	hsv(238, 76%, 39%)
CMYK	cmyk(75.8%, 72.7%, 0%, 61.2%)
CIE-LAB	lab(14.84, 25.45, -42.74)
CIE-LCH	lch(14.84, 49.74, 300.77°)
OKLab	oklab(27.64% 0.0066 -0.1235)
OKLCH	oklch(27.64% 0.124 273.1)
XYZ	xyz(3.0200, 1.8786, 12.0054)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B63 #636018

analogous

#184163 #181B63 #3B1863

triadic

#181B63 #63181B #1B6318

tetradic

#181B63 #631841 #636018 #18633B

square

#181B63 #631841 #636018 #18633B

split-complementary

#181B63 #633B18 #416318

monochromatic

#060719 #0C0E32 #181B63 #242894 #3036C6

Accessibility & contrast

On white

15.26

#181B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#181B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B63

15.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B63	#FFFFFF	#000000	##FFFFFF
##181B63	1.00	15.26	1.38	15.26
#FFFFFF	15.26	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002965

Deuteranopia (green-blind)

#002262

Tritanopia (blue-blind)

#002F3C

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181b63;
/* rgb */ color: rgb(24, 27, 99);
/* oklch */ color: oklch(27.6% 0.124 273.1);

Tailwind

colors: {
  custom: {
    50: '#625790',
    500: '#181b63',
    950: '#000000',
  },
}

SCSS

$custom: #181b63;
$custom-light: #625790;
$custom-dark: #000000;

JSON

{
  "hex": "#181b63",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 99
  },
  "hsl": {
    "h": 237.6,
    "s": 60.976,
    "l": 24.118
  },
  "oklch": {
    "l": 0.27635,
    "c": 0.12373,
    "h": 273.1
  },
  "luminance": 0.01879
}

Semantic roles & 50–950 ramp

primary

#181B63

secondary

#99963E

accent

#DE44E4

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030D

muted

#7A787D

Preview Lab

Preview with #181B63

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

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