#181F70#181F70

#181F70 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.137 H 271.0°. Best body text is #FFFFFF at 14.30:1 contrast (WCAG AA passes).

Color values

HEX	#181F70
RGB	rgb(24, 31, 112)
HSL	hsl(235, 65%, 27%)
HSV	hsv(235, 79%, 44%)
CMYK	cmyk(78.6%, 72.3%, 0%, 56.1%)
CIE-LAB	lab(17.20, 27.74, -47.37)
CIE-LCH	lch(17.20, 54.89, 300.35°)
OKLab	oklab(29.76% 0.0024 -0.1371)
OKLCH	oklch(29.76% 0.137 271)
XYZ	xyz(3.7903, 2.3436, 15.5787)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F70 #706918

analogous

#184B70 #181F70 #3D1870

triadic

#181F70 #70181F #1F7018

tetradic

#181F70 #70184B #706918 #18703D

square

#181F70 #70184B #706918 #18703D

split-complementary

#181F70 #703D18 #4B7018

monochromatic

#050719 #0D113E #181F70 #232DA2 #303DD3

Accessibility & contrast

On white

14.30

#181F70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#181F70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F70

14.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F70	#FFFFFF	#000000	##FFFFFF
##181F70	1.00	14.30	1.47	14.30
#FFFFFF	14.30	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F72

Deuteranopia (green-blind)

#00266F

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181f70;
/* rgb */ color: rgb(24, 31, 112);
/* oklch */ color: oklch(29.8% 0.137 271.0);

Tailwind

colors: {
  custom: {
    50: '#655b9a',
    500: '#181f70',
    950: '#000000',
  },
}

SCSS

$custom: #181f70;
$custom-light: #655b9a;
$custom-dark: #000000;

JSON

{
  "hex": "#181f70",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 112
  },
  "hsl": {
    "h": 235.227,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.29755,
    "c": 0.1371,
    "h": 271
  },
  "luminance": 0.02344
}

Semantic roles & 50–950 ramp

primary

#181F70

secondary

#A59D3E

accent

#DA40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #181F70

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

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