#251CB3#251CB3

#251CB3 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.9% C 0.219 H 271.4°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#251CB3
RGB	rgb(37, 28, 179)
HSL	hsl(244, 73%, 41%)
HSV	hsv(244, 84%, 70%)
CMYK	cmyk(79.3%, 84.4%, 0%, 29.8%)
CIE-LAB	lab(25.19, 52.95, -75.73)
CIE-LCH	lch(25.19, 92.41, 304.96°)
OKLab	oklab(37.86% 0.0052 -0.2191)
OKLCH	oklch(37.86% 0.219 271.4)
XYZ	xyz(9.3121, 4.4774, 43.0125)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251CB3 #AAB31C

analogous

#1C5EB3 #251CB3 #701CB3

triadic

#251CB3 #B3251C #1CB325

tetradic

#251CB3 #B31C5E #AAB31C #1CB370

square

#251CB3 #B31C5E #AAB31C #1CB370

split-complementary

#251CB3 #B3701C #5EB31C

monochromatic

#0F0B49 #1A147E #251CB3 #382EDE #6B63E7

Accessibility & contrast

On white

11.08

#251CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#251CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251CB3

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251CB3	#FFFFFF	#000000	##FFFFFF
##251CB3	1.00	11.08	1.90	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B7

Deuteranopia (green-blind)

#0034B1

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #251cb3;
/* rgb */ color: rgb(37, 28, 179);
/* oklch */ color: oklch(37.9% 0.219 271.4);

Tailwind

colors: {
  custom: {
    50: '#7b5ecb',
    500: '#251cb3',
    950: '#000000',
  },
}

SCSS

$custom: #251cb3;
$custom-light: #7b5ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#251cb3",
  "rgb": {
    "r": 37,
    "g": 28,
    "b": 179
  },
  "hsl": {
    "h": 243.576,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.37857,
    "c": 0.21916,
    "h": 271.4
  },
  "luminance": 0.04478
}

Semantic roles & 50–950 ramp

primary

#251CB3

secondary

#C5CB5F

accent

#F038E5

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #251CB3

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

Preview Lab → · Contrast checker → · Palette generator →