#251583#251583

#251583 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.4% C 0.168 H 277.1°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#251583
RGB	rgb(37, 21, 131)
HSL	hsl(249, 72%, 30%)
HSV	hsv(249, 84%, 51%)
CMYK	cmyk(71.8%, 84%, 0%, 48.6%)
CIE-LAB	lab(18.22, 41.40, -57.81)
CIE-LCH	lch(18.22, 71.10, 305.61°)
OKLab	oklab(31.36% 0.0207 -0.167)
OKLCH	oklch(31.36% 0.168 277.1)
XYZ	xyz(5.1265, 2.5679, 21.6938)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251583 #738315

analogous

#153C83 #251583 #5C1583

triadic

#251583 #832515 #158325

tetradic

#251583 #83153C #738315 #15835C

square

#251583 #83153C #738315 #15835C

split-complementary

#251583 #835C15 #3C8315

monochromatic

#07041A #160D4E #251583 #341DB8 #4D34DE

Accessibility & contrast

On white

13.87

#251583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#251583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251583

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251583	#FFFFFF	#000000	##FFFFFF
##251583	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003186

Deuteranopia (green-blind)

#002881

Tritanopia (blue-blind)

#00384D

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #251583;
/* rgb */ color: rgb(37, 21, 131);
/* oklch */ color: oklch(31.4% 0.168 277.1);

Tailwind

colors: {
  custom: {
    50: '#7057a8',
    500: '#251583',
    950: '#000000',
  },
}

SCSS

$custom: #251583;
$custom-light: #7057a8;
$custom-dark: #000000;

JSON

{
  "hex": "#251583",
  "rgb": {
    "r": 37,
    "g": 21,
    "b": 131
  },
  "hsl": {
    "h": 248.727,
    "s": 72.368,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31356,
    "c": 0.16832,
    "h": 277.1
  },
  "luminance": 0.02568
}

Semantic roles & 50–950 ramp

primary

#251583

secondary

#A6B83C

accent

#EF39D5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #251583

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

Preview Lab → · Contrast checker → · Palette generator →