#252F81#252F81

#252F81 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.2% C 0.137 H 272.0°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#252F81
RGB	rgb(37, 47, 129)
HSL	hsl(233, 55%, 33%)
HSV	hsv(233, 71%, 51%)
CMYK	cmyk(71.3%, 63.6%, 0%, 49.4%)
CIE-LAB	lab(23.71, 25.02, -47.52)
CIE-LCH	lch(23.71, 53.71, 297.77°)
OKLab	oklab(35.22% 0.0047 -0.1371)
OKLCH	oklch(35.22% 0.137 272)
XYZ	xyz(5.7406, 4.0108, 21.2362)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#252F81 #817725

analogous

#255D81 #252F81 #492581

triadic

#252F81 #81252F #2F8125

tetradic

#252F81 #81255D #817725 #258149

square

#252F81 #81255D #817725 #258149

split-complementary

#252F81 #814925 #5D8125

monochromatic

#0A0C22 #171E51 #252F81 #3340B1 #5360CE

Accessibility & contrast

On white

11.65

#252F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#252F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #252F81

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##252F81	#FFFFFF	#000000	##FFFFFF
##252F81	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D84

Deuteranopia (green-blind)

#00347F

Tritanopia (blue-blind)

#004453

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #252f81;
/* rgb */ color: rgb(37, 47, 129);
/* oklch */ color: oklch(35.2% 0.137 272.0);

Tailwind

colors: {
  custom: {
    50: '#6d67a6',
    500: '#252f81',
    950: '#000000',
  },
}

SCSS

$custom: #252f81;
$custom-light: #6d67a6;
$custom-dark: #000000;

JSON

{
  "hex": "#252f81",
  "rgb": {
    "r": 37,
    "g": 47,
    "b": 129
  },
  "hsl": {
    "h": 233.478,
    "s": 55.422,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35223,
    "c": 0.13719,
    "h": 272
  },
  "luminance": 0.04011
}

Semantic roles & 50–950 ramp

primary

#252F81

secondary

#B2A750

accent

#CE49DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #252F81

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

Preview Lab → · Contrast checker → · Palette generator →