#181C52#181C52

#181C52 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.1% C 0.097 H 274.3°. Best body text is #FFFFFF at 15.83:1 contrast (WCAG AA passes).

Color values

HEX	#181C52
RGB	rgb(24, 28, 82)
HSL	hsl(236, 55%, 21%)
HSV	hsv(236, 71%, 32%)
CMYK	cmyk(70.7%, 65.9%, 0%, 67.8%)
CIE-LAB	lab(13.43, 18.05, -33.62)
CIE-LCH	lch(13.43, 38.16, 298.23°)
OKLab	oklab(26.1% 0.0072 -0.0968)
OKLCH	oklch(26.1% 0.097 274.3)
XYZ	xyz(2.3144, 1.6337, 8.1744)
Luminance	0.0163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C52 #524E18

analogous

#183952 #181C52 #311852

triadic

#181C52 #52181C #1C5218

tetradic

#181C52 #521839 #524E18 #185231

square

#181C52 #521839 #524E18 #185231

split-complementary

#181C52 #523118 #395218

monochromatic

#070818 #0A0C23 #181C52 #262C81 #343CB1

Accessibility & contrast

On white

15.83

#181C52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#181C52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C52

15.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C52	#FFFFFF	#000000	##FFFFFF
##181C52	1.00	15.83	1.33	15.83
#FFFFFF	15.83	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002554

Deuteranopia (green-blind)

#002051

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181c52;
/* rgb */ color: rgb(24, 28, 82);
/* oklch */ color: oklch(26.1% 0.097 274.3);

Tailwind

colors: {
  custom: {
    50: '#5d5883',
    500: '#181c52',
    950: '#000000',
  },
}

SCSS

$custom: #181c52;
$custom-light: #5d5883;
$custom-dark: #000000;

JSON

{
  "hex": "#181c52",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 82
  },
  "hsl": {
    "h": 235.862,
    "s": 54.717,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26096,
    "c": 0.09711,
    "h": 274.3
  },
  "luminance": 0.01634
}

Semantic roles & 50–950 ramp

primary

#181C52

secondary

#89843D

accent

#D44ADE

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181C52

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

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