#251D99#251D99

#251D99 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.9% C 0.188 H 273.5°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#251D99
RGB	rgb(37, 29, 153)
HSL	hsl(244, 68%, 36%)
HSV	hsv(244, 81%, 60%)
CMYK	cmyk(75.8%, 81%, 0%, 40%)
CIE-LAB	lab(22.20, 44.43, -64.93)
CIE-LCH	lch(22.20, 78.68, 304.38°)
OKLab	oklab(34.88% 0.0114 -0.1878)
OKLCH	oklch(34.88% 0.188 273.5)
XYZ	xyz(6.9502, 3.5712, 30.4538)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251D99 #91991D

analogous

#1D5399 #251D99 #631D99

triadic

#251D99 #99251D #1D9925

tetradic

#251D99 #991D53 #91991D #1D9963

square

#251D99 #991D53 #91991D #1D9963

split-complementary

#251D99 #99631D #53991D

monochromatic

#0C0932 #191366 #251D99 #3127CC #5B52DE

Accessibility & contrast

On white

12.25

#251D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#251D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251D99

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251D99	#FFFFFF	#000000	##FFFFFF
##251D99	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9C

Deuteranopia (green-blind)

#002F97

Tritanopia (blue-blind)

#00445B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #251d99;
/* rgb */ color: rgb(37, 29, 153);
/* oklch */ color: oklch(34.9% 0.188 273.5);

Tailwind

colors: {
  custom: {
    50: '#745cb8',
    500: '#251d99',
    950: '#000000',
  },
}

SCSS

$custom: #251d99;
$custom-light: #745cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#251d99",
  "rgb": {
    "r": 37,
    "g": 29,
    "b": 153
  },
  "hsl": {
    "h": 243.871,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.3488,
    "c": 0.1882,
    "h": 273.5
  },
  "luminance": 0.03572
}

Semantic roles & 50–950 ramp

primary

#251D99

secondary

#BAC151

accent

#EB3DE0

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #251D99

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

Preview Lab → · Contrast checker → · Palette generator →