#251D8A#251D8A

#251D8A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.2% C 0.170 H 275.1°. Best body text is #FFFFFF at 12.95:1 contrast (WCAG AA passes).

Color values

HEX	#251D8A
RGB	rgb(37, 29, 138)
HSL	hsl(244, 65%, 33%)
HSV	hsv(244, 79%, 54%)
CMYK	cmyk(73.2%, 79%, 0%, 45.9%)
CIE-LAB	lab(20.47, 39.54, -58.50)
CIE-LCH	lch(20.47, 70.61, 304.05°)
OKLab	oklab(33.16% 0.0151 -0.1692)
OKLCH	oklch(33.16% 0.17 275.1)
XYZ	xyz(5.7882, 3.1065, 24.3344)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251D8A #828A1D

analogous

#1D4B8A #251D8A #5C1D8A

triadic

#251D8A #8A251D #1D8A25

tetradic

#251D8A #8A1D4B #828A1D #1D8A5C

square

#251D8A #8A1D4B #828A1D #1D8A5C

split-complementary

#251D8A #8A5C1D #4B8A1D

monochromatic

#0A0825 #171257 #251D8A #3328BD #5349D9

Accessibility & contrast

On white

12.95

#251D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#251D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251D8A

12.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251D8A	#FFFFFF	#000000	##FFFFFF
##251D8A	1.00	12.95	1.62	12.95
#FFFFFF	12.95	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002C88

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #251d8a;
/* rgb */ color: rgb(37, 29, 138);
/* oklch */ color: oklch(33.2% 0.170 275.1);

Tailwind

colors: {
  custom: {
    50: '#715bad',
    500: '#251d8a',
    950: '#000000',
  },
}

SCSS

$custom: #251d8a;
$custom-light: #715bad;
$custom-dark: #000000;

JSON

{
  "hex": "#251d8a",
  "rgb": {
    "r": 37,
    "g": 29,
    "b": 138
  },
  "hsl": {
    "h": 244.404,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33159,
    "c": 0.16985,
    "h": 275.1
  },
  "luminance": 0.03107
}

Semantic roles & 50–950 ramp

primary

#251D8A

secondary

#B2BB48

accent

#E840DC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #251D8A

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

Preview Lab → · Contrast checker → · Palette generator →