#251DAA#251DAA

#251DAA is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 36.9% C 0.208 H 272.0°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#251DAA
RGB	rgb(37, 29, 170)
HSL	hsl(243, 71%, 39%)
HSV	hsv(243, 83%, 67%)
CMYK	cmyk(78.2%, 82.9%, 0%, 33.3%)
CIE-LAB	lab(24.24, 49.77, -71.91)
CIE-LCH	lch(24.24, 87.45, 304.69°)
OKLab	oklab(36.88% 0.0072 -0.2081)
OKLCH	oklch(36.88% 0.208 272)
XYZ	xyz(8.4556, 4.1734, 38.3823)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251DAA #A2AA1D

analogous

#1D5CAA #251DAA #6C1DAA

triadic

#251DAA #AA251D #1DAA25

tetradic

#251DAA #AA1D5C #A2AA1D #1DAA6C

square

#251DAA #AA1D5C #A2AA1D #1DAA6C

split-complementary

#251DAA #AA6C1D #5CAA1D

monochromatic

#0E0B41 #1A1476 #251DAA #342ADB #655EE4

Accessibility & contrast

On white

11.45

#251DAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#251DAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251DAA

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251DAA	#FFFFFF	#000000	##FFFFFF
##251DAA	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AE

Deuteranopia (green-blind)

#0033A8

Tritanopia (blue-blind)

#004A65

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #251daa;
/* rgb */ color: rgb(37, 29, 170);
/* oklch */ color: oklch(36.9% 0.208 272.0);

Tailwind

colors: {
  custom: {
    50: '#795ec5',
    500: '#251daa',
    950: '#000000',
  },
}

SCSS

$custom: #251daa;
$custom-light: #795ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#251daa",
  "rgb": {
    "r": 37,
    "g": 29,
    "b": 170
  },
  "hsl": {
    "h": 243.404,
    "s": 70.854,
    "l": 39.02
  },
  "oklch": {
    "l": 0.36882,
    "c": 0.20819,
    "h": 272
  },
  "luminance": 0.04174
}

Semantic roles & 50–950 ramp

primary

#251DAA

secondary

#C2C85B

accent

#EE3AE3

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #251DAA

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

Preview Lab → · Contrast checker → · Palette generator →