#181E71#181E71

#181E71 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.7% C 0.140 H 271.2°. Best body text is #FFFFFF at 14.35:1 contrast (WCAG AA passes).

Color values

HEX	#181E71
RGB	rgb(24, 30, 113)
HSL	hsl(236, 65%, 27%)
HSV	hsv(236, 79%, 44%)
CMYK	cmyk(78.8%, 73.5%, 0%, 55.7%)
CIE-LAB	lab(17.06, 28.78, -48.24)
CIE-LCH	lch(17.06, 56.18, 300.82°)
OKLab	oklab(29.69% 0.0029 -0.1396)
OKLCH	oklch(29.69% 0.14 271.2)
XYZ	xyz(3.8206, 2.3146, 15.8650)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E71 #716B18

analogous

#184B71 #181E71 #3F1871

triadic

#181E71 #71181E #1E7118

tetradic

#181E71 #71184B #716B18 #18713F

square

#181E71 #71184B #716B18 #18713F

split-complementary

#181E71 #713F18 #4B7118

monochromatic

#050719 #0D113F #181E71 #232BA3 #303BD3

Accessibility & contrast

On white

14.35

#181E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#181E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E71

14.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E71	#FFFFFF	#000000	##FFFFFF
##181E71	1.00	14.35	1.46	14.35
#FFFFFF	14.35	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E74

Deuteranopia (green-blind)

#00266F

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181e71;
/* rgb */ color: rgb(24, 30, 113);
/* oklch */ color: oklch(29.7% 0.140 271.2);

Tailwind

colors: {
  custom: {
    50: '#655a9b',
    500: '#181e71',
    950: '#000000',
  },
}

SCSS

$custom: #181e71;
$custom-light: #655a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#181e71",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 113
  },
  "hsl": {
    "h": 235.955,
    "s": 64.964,
    "l": 26.863
  },
  "oklch": {
    "l": 0.29687,
    "c": 0.13966,
    "h": 271.2
  },
  "luminance": 0.02315
}

Semantic roles & 50–950 ramp

primary

#181E71

secondary

#A69F3E

accent

#DD40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #181E71

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

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