#181B79#181B79

#181B79 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.1% C 0.154 H 271.1°. Best body text is #FFFFFF at 14.27:1 contrast (WCAG AA passes).

Color values

HEX	#181B79
RGB	rgb(24, 27, 121)
HSL	hsl(238, 67%, 28%)
HSV	hsv(238, 80%, 47%)
CMYK	cmyk(80.2%, 77.7%, 0%, 52.5%)
CIE-LAB	lab(17.26, 33.65, -53.06)
CIE-LCH	lch(17.26, 62.83, 302.38°)
OKLab	oklab(30.1% 0.0031 -0.1536)
OKLCH	oklch(30.1% 0.154 271.1)
XYZ	xyz(4.2186, 2.3581, 18.3183)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B79 #797618

analogous

#184B79 #181B79 #451879

triadic

#181B79 #79181B #1B7918

tetradic

#181B79 #79184B #797618 #187945

square

#181B79 #79184B #797618 #187945

split-complementary

#181B79 #794518 #4B7918

monochromatic

#05061A #0E1046 #181B79 #2226AC #353AD7

Accessibility & contrast

On white

14.27

#181B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#181B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B79

14.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B79	#FFFFFF	#000000	##FFFFFF
##181B79	1.00	14.27	1.47	14.27
#FFFFFF	14.27	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7C

Deuteranopia (green-blind)

#002677

Tritanopia (blue-blind)

#003749

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181b79;
/* rgb */ color: rgb(24, 27, 121);
/* oklch */ color: oklch(30.1% 0.154 271.1);

Tailwind

colors: {
  custom: {
    50: '#6858a1',
    500: '#181b79',
    950: '#000000',
  },
}

SCSS

$custom: #181b79;
$custom-light: #6858a1;
$custom-dark: #000000;

JSON

{
  "hex": "#181b79",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 121
  },
  "hsl": {
    "h": 238.144,
    "s": 66.897,
    "l": 28.431
  },
  "oklch": {
    "l": 0.301,
    "c": 0.15366,
    "h": 271.1
  },
  "luminance": 0.02359
}

Semantic roles & 50–950 ramp

primary

#181B79

secondary

#AEAA3F

accent

#E43EEA

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #181B79

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

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