#181C73#181C73

#181C73 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.6% C 0.145 H 271.4°. Best body text is #FFFFFF at 14.46:1 contrast (WCAG AA passes).

Color values

HEX	#181C73
RGB	rgb(24, 28, 115)
HSL	hsl(237, 65%, 27%)
HSV	hsv(237, 79%, 45%)
CMYK	cmyk(79.1%, 75.7%, 0%, 54.9%)
CIE-LAB	lab(16.81, 30.83, -49.95)
CIE-LCH	lch(16.81, 58.70, 301.68°)
OKLab	oklab(29.57% 0.0037 -0.1446)
OKLCH	oklch(29.57% 0.145 271.4)
XYZ	xyz(3.8854, 2.2621, 16.4482)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C73 #736F18

analogous

#184973 #181C73 #421873

triadic

#181C73 #73181C #1C7318

tetradic

#181C73 #731849 #736F18 #187342

square

#181C73 #731849 #736F18 #187342

split-complementary

#181C73 #734218 #497318

monochromatic

#050619 #0D1040 #181C73 #2328A6 #3138D4

Accessibility & contrast

On white

14.46

#181C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#181C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C73

14.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C73	#FFFFFF	#000000	##FFFFFF
##181C73	1.00	14.46	1.45	14.46
#FFFFFF	14.46	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E76

Deuteranopia (green-blind)

#002571

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181c73;
/* rgb */ color: rgb(24, 28, 115);
/* oklch */ color: oklch(29.6% 0.145 271.4);

Tailwind

colors: {
  custom: {
    50: '#66599c',
    500: '#181c73',
    950: '#000000',
  },
}

SCSS

$custom: #181c73;
$custom-light: #66599c;
$custom-dark: #000000;

JSON

{
  "hex": "#181c73",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 115
  },
  "hsl": {
    "h": 237.363,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.29572,
    "c": 0.14465,
    "h": 271.4
  },
  "luminance": 0.02263
}

Semantic roles & 50–950 ramp

primary

#181C73

secondary

#A8A43F

accent

#E13FE8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181C73

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

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