#181D77#181D77

#181D77 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.2% C 0.149 H 271.0°. Best body text is #FFFFFF at 14.18:1 contrast (WCAG AA passes).

Color values

HEX	#181D77
RGB	rgb(24, 29, 119)
HSL	hsl(237, 66%, 28%)
HSV	hsv(237, 80%, 47%)
CMYK	cmyk(79.8%, 75.6%, 0%, 53.3%)
CIE-LAB	lab(17.48, 31.68, -51.42)
CIE-LCH	lch(17.48, 60.39, 301.64°)
OKLab	oklab(30.19% 0.0025 -0.1489)
OKLCH	oklch(30.19% 0.149 271)
XYZ	xyz(4.1447, 2.4044, 17.6948)
Luminance	0.0240 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D77 #777218

analogous

#184C77 #181D77 #421877

triadic

#181D77 #77181D #1D7718

tetradic

#181D77 #77184C #777218 #187742

square

#181D77 #77184C #777218 #187742

split-complementary

#181D77 #774218 #4C7718

monochromatic

#050619 #0E1144 #181D77 #2229AA #333CD6

Accessibility & contrast

On white

14.18

#181D77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#181D77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D77

14.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D77	#FFFFFF	#000000	##FFFFFF
##181D77	1.00	14.18	1.48	14.18
#FFFFFF	14.18	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307A

Deuteranopia (green-blind)

#002675

Tritanopia (blue-blind)

#003748

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #181d77;
/* rgb */ color: rgb(24, 29, 119);
/* oklch */ color: oklch(30.2% 0.149 271.0);

Tailwind

colors: {
  custom: {
    50: '#675a9f',
    500: '#181d77',
    950: '#000000',
  },
}

SCSS

$custom: #181d77;
$custom-light: #675a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#181d77",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 119
  },
  "hsl": {
    "h": 236.842,
    "s": 66.434,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30187,
    "c": 0.14889,
    "h": 271
  },
  "luminance": 0.02405
}

Semantic roles & 50–950 ramp

primary

#181D77

secondary

#ACA63F

accent

#E03EE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #181D77

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

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