#181A73#181A73

#181A73 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.3% C 0.147 H 271.8°. Best body text is #FFFFFF at 14.64:1 contrast (WCAG AA passes).

Color values

HEX	#181A73
RGB	rgb(24, 26, 115)
HSL	hsl(239, 65%, 27%)
HSV	hsv(239, 79%, 45%)
CMYK	cmyk(79.1%, 77.4%, 0%, 54.9%)
CIE-LAB	lab(16.36, 32.09, -50.70)
CIE-LCH	lch(16.36, 60.00, 302.33°)
OKLab	oklab(29.25% 0.0046 -0.1467)
OKLCH	oklch(29.25% 0.147 271.8)
XYZ	xyz(3.8396, 2.1704, 16.4329)
Luminance	0.0217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A73 #737118

analogous

#184873 #181A73 #431873

triadic

#181A73 #73181A #1A7318

tetradic

#181A73 #731848 #737118 #187343

square

#181A73 #731848 #737118 #187343

split-complementary

#181A73 #734318 #487318

monochromatic

#050619 #0D0F40 #181A73 #2325A6 #3135D4

Accessibility & contrast

On white

14.64

#181A73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181A73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A73

14.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A73	#FFFFFF	#000000	##FFFFFF
##181A73	1.00	14.64	1.43	14.64
#FFFFFF	14.64	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D76

Deuteranopia (green-blind)

#002471

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181a73;
/* rgb */ color: rgb(24, 26, 115);
/* oklch */ color: oklch(29.3% 0.147 271.8);

Tailwind

colors: {
  custom: {
    50: '#66589c',
    500: '#181a73',
    950: '#000000',
  },
}

SCSS

$custom: #181a73;
$custom-light: #66589c;
$custom-dark: #000000;

JSON

{
  "hex": "#181a73",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 115
  },
  "hsl": {
    "h": 238.681,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.29252,
    "c": 0.14682,
    "h": 271.8
  },
  "luminance": 0.02171
}

Semantic roles & 50–950 ramp

primary

#181A73

secondary

#A8A63F

accent

#E53FE8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181A73

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

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