#181A66#181A66

#181A66 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.8% C 0.129 H 273.0°. Best body text is #FFFFFF at 15.24:1 contrast (WCAG AA passes).

Color values

HEX	#181A66
RGB	rgb(24, 26, 102)
HSL	hsl(238, 62%, 25%)
HSV	hsv(238, 76%, 40%)
CMYK	cmyk(76.5%, 74.5%, 0%, 60%)
CIE-LAB	lab(14.91, 27.26, -44.60)
CIE-LCH	lch(14.91, 52.27, 301.44°)
OKLab	oklab(27.79% 0.0069 -0.129)
OKLCH	oklch(27.79% 0.129 273)
XYZ	xyz(3.1436, 1.8920, 12.7673)
Luminance	0.0189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A66 #666418

analogous

#184166 #181A66 #3D1866

triadic

#181A66 #66181A #1A6618

tetradic

#181A66 #661841 #666418 #18663D

square

#181A66 #661841 #666418 #18663D

split-complementary

#181A66 #663D18 #416618

monochromatic

#060619 #0C0D34 #181A66 #242798 #2F33C9

Accessibility & contrast

On white

15.24

#181A66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#181A66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A66

15.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A66	#FFFFFF	#000000	##FFFFFF
##181A66	1.00	15.24	1.38	15.24
#FFFFFF	15.24	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002968

Deuteranopia (green-blind)

#002265

Tritanopia (blue-blind)

#002F3E

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181a66;
/* rgb */ color: rgb(24, 26, 102);
/* oklch */ color: oklch(27.8% 0.129 273.0);

Tailwind

colors: {
  custom: {
    50: '#635793',
    500: '#181a66',
    950: '#000000',
  },
}

SCSS

$custom: #181a66;
$custom-light: #635793;
$custom-dark: #000000;

JSON

{
  "hex": "#181a66",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 102
  },
  "hsl": {
    "h": 238.462,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.27785,
    "c": 0.12917,
    "h": 273
  },
  "luminance": 0.01892
}

Semantic roles & 50–950 ramp

primary

#181A66

secondary

#9C9A3E

accent

#E143E5

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181A66

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

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