#181D52#181D52

#181D52 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.3% C 0.096 H 273.7°. Best body text is #FFFFFF at 15.71:1 contrast (WCAG AA passes).

Color values

HEX	#181D52
RGB	rgb(24, 29, 82)
HSL	hsl(235, 55%, 21%)
HSV	hsv(235, 71%, 32%)
CMYK	cmyk(70.7%, 64.6%, 0%, 67.8%)
CIE-LAB	lab(13.72, 17.32, -33.16)
CIE-LCH	lch(13.72, 37.41, 297.58°)
OKLab	oklab(26.31% 0.0062 -0.0954)
OKLCH	oklch(26.31% 0.096 273.7)
XYZ	xyz(2.3385, 1.6819, 8.1824)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D52 #524D18

analogous

#183A52 #181D52 #301852

triadic

#181D52 #52181D #1D5218

tetradic

#181D52 #52183A #524D18 #185230

square

#181D52 #52183A #524D18 #185230

split-complementary

#181D52 #523018 #3A5218

monochromatic

#070818 #0A0C23 #181D52 #262E81 #343EB1

Accessibility & contrast

On white

15.71

#181D52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#181D52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D52

15.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D52	#FFFFFF	#000000	##FFFFFF
##181D52	1.00	15.71	1.34	15.71
#FFFFFF	15.71	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002654

Deuteranopia (green-blind)

#002051

Tritanopia (blue-blind)

#002A34

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181d52;
/* rgb */ color: rgb(24, 29, 82);
/* oklch */ color: oklch(26.3% 0.096 273.7);

Tailwind

colors: {
  custom: {
    50: '#5d5883',
    500: '#181d52',
    950: '#000000',
  },
}

SCSS

$custom: #181d52;
$custom-light: #5d5883;
$custom-dark: #000000;

JSON

{
  "hex": "#181d52",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 82
  },
  "hsl": {
    "h": 234.828,
    "s": 54.717,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26308,
    "c": 0.09565,
    "h": 273.7
  },
  "luminance": 0.01682
}

Semantic roles & 50–950 ramp

primary

#181D52

secondary

#89823D

accent

#D14ADE

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181D52

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

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