#181D74#181D74

#181D74 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.145 H 271.2°. Best body text is #FFFFFF at 14.32:1 contrast (WCAG AA passes).

Color values

HEX	#181D74
RGB	rgb(24, 29, 116)
HSL	hsl(237, 66%, 27%)
HSV	hsv(237, 79%, 45%)
CMYK	cmyk(79.3%, 75%, 0%, 54.5%)
CIE-LAB	lab(17.15, 30.57, -50.04)
CIE-LCH	lch(17.15, 58.63, 301.42°)
OKLab	oklab(29.85% 0.003 -0.1448)
OKLCH	oklch(29.85% 0.145 271.2)
XYZ	xyz(3.9674, 2.3334, 16.7609)
Luminance	0.0233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D74 #746F18

analogous

#184B74 #181D74 #411874

triadic

#181D74 #74181D #1D7418

tetradic

#181D74 #74184B #746F18 #187441

square

#181D74 #74184B #746F18 #187441

split-complementary

#181D74 #744118 #4B7418

monochromatic

#050619 #0E1041 #181D74 #222AA7 #323BD5

Accessibility & contrast

On white

14.32

#181D74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#181D74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D74

14.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D74	#FFFFFF	#000000	##FFFFFF
##181D74	1.00	14.32	1.47	14.32
#FFFFFF	14.32	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F77

Deuteranopia (green-blind)

#002672

Tritanopia (blue-blind)

#003646

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181d74;
/* rgb */ color: rgb(24, 29, 116);
/* oklch */ color: oklch(29.8% 0.145 271.2);

Tailwind

colors: {
  custom: {
    50: '#665a9d',
    500: '#181d74',
    950: '#000000',
  },
}

SCSS

$custom: #181d74;
$custom-light: #665a9d;
$custom-dark: #000000;

JSON

{
  "hex": "#181d74",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 116
  },
  "hsl": {
    "h": 236.739,
    "s": 65.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29849,
    "c": 0.14488,
    "h": 271.2
  },
  "luminance": 0.02334
}

Semantic roles & 50–950 ramp

primary

#181D74

secondary

#A9A33F

accent

#DF3FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181D74

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

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