#181C70#181C70

#181C70 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.2% C 0.141 H 271.7°. Best body text is #FFFFFF at 14.59:1 contrast (WCAG AA passes).

Color values

HEX	#181C70
RGB	rgb(24, 28, 112)
HSL	hsl(237, 65%, 27%)
HSV	hsv(237, 79%, 44%)
CMYK	cmyk(78.6%, 75%, 0%, 56.1%)
CIE-LAB	lab(16.48, 29.72, -48.56)
CIE-LCH	lch(16.48, 56.93, 301.46°)
OKLab	oklab(29.24% 0.0041 -0.1405)
OKLCH	oklch(29.24% 0.141 271.7)
XYZ	xyz(3.7156, 2.1942, 15.5538)
Luminance	0.0220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C70 #706C18

analogous

#184870 #181C70 #401870

triadic

#181C70 #70181C #1C7018

tetradic

#181C70 #701848 #706C18 #187040

square

#181C70 #701848 #706C18 #187040

split-complementary

#181C70 #704018 #487018

monochromatic

#050619 #0D0F3E #181C70 #2329A2 #3037D3

Accessibility & contrast

On white

14.59

#181C70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#181C70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C70

14.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C70	#FFFFFF	#000000	##FFFFFF
##181C70	1.00	14.59	1.44	14.59
#FFFFFF	14.59	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D73

Deuteranopia (green-blind)

#00246E

Tritanopia (blue-blind)

#003444

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181c70;
/* rgb */ color: rgb(24, 28, 112);
/* oklch */ color: oklch(29.2% 0.141 271.7);

Tailwind

colors: {
  custom: {
    50: '#65599a',
    500: '#181c70',
    950: '#000000',
  },
}

SCSS

$custom: #181c70;
$custom-light: #65599a;
$custom-dark: #000000;

JSON

{
  "hex": "#181c70",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 112
  },
  "hsl": {
    "h": 237.273,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.29235,
    "c": 0.1406,
    "h": 271.7
  },
  "luminance": 0.02195
}

Semantic roles & 50–950 ramp

primary

#181C70

secondary

#A5A13E

accent

#E040E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181C70

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

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