#252B81#252B81

#252B81 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.5% C 0.142 H 273.2°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX	#252B81
RGB	rgb(37, 43, 129)
HSL	hsl(236, 55%, 33%)
HSV	hsv(236, 71%, 51%)
CMYK	cmyk(71.3%, 66.7%, 0%, 49.4%)
CIE-LAB	lab(22.67, 27.73, -49.22)
CIE-LCH	lch(22.67, 56.49, 299.40°)
OKLab	oklab(34.46% 0.0078 -0.1421)
OKLCH	oklch(34.46% 0.142 273.2)
XYZ	xyz(5.5879, 3.7055, 21.1854)
Luminance	0.0371 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#252B81 #817B25

analogous

#255981 #252B81 #4D2581

triadic

#252B81 #81252B #2B8125

tetradic

#252B81 #812559 #817B25 #25814D

square

#252B81 #812559 #817B25 #25814D

split-complementary

#252B81 #814D25 #598125

monochromatic

#0A0B22 #171B51 #252B81 #333BB1 #535BCE

Accessibility & contrast

On white

12.06

#252B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#252B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #252B81

12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##252B81	#FFFFFF	#000000	##FFFFFF
##252B81	1.00	12.06	1.74	12.06
#FFFFFF	12.06	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A84

Deuteranopia (green-blind)

#00327F

Tritanopia (blue-blind)

#004152

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #252b81;
/* rgb */ color: rgb(37, 43, 129);
/* oklch */ color: oklch(34.5% 0.142 273.2);

Tailwind

colors: {
  custom: {
    50: '#6d64a6',
    500: '#252b81',
    950: '#000000',
  },
}

SCSS

$custom: #252b81;
$custom-light: #6d64a6;
$custom-dark: #000000;

JSON

{
  "hex": "#252b81",
  "rgb": {
    "r": 37,
    "g": 43,
    "b": 129
  },
  "hsl": {
    "h": 236.087,
    "s": 55.422,
    "l": 32.549
  },
  "oklch": {
    "l": 0.34463,
    "c": 0.14232,
    "h": 273.2
  },
  "luminance": 0.03706
}

Semantic roles & 50–950 ramp

primary

#252B81

secondary

#B2AB50

accent

#D549DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08050F

muted

#7B7A7F

Preview Lab

Preview with #252B81

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

Preview Lab → · Contrast checker → · Palette generator →