#251FA0#251FA0

#251FA0 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.9% C 0.195 H 272.7°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#251FA0
RGB	rgb(37, 31, 160)
HSL	hsl(243, 68%, 37%)
HSV	hsv(243, 81%, 63%)
CMYK	cmyk(76.9%, 80.6%, 0%, 37.3%)
CIE-LAB	lab(23.37, 45.66, -67.27)
CIE-LCH	lch(23.37, 81.30, 304.16°)
OKLab	oklab(35.94% 0.0091 -0.1947)
OKLCH	oklch(35.94% 0.195 272.7)
XYZ	xyz(7.5960, 3.9105, 33.6054)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251FA0 #9AA01F

analogous

#1F59A0 #251FA0 #661FA0

triadic

#251FA0 #A0251F #1FA025

tetradic

#251FA0 #A01F59 #9AA01F #1FA066

square

#251FA0 #A01F59 #9AA01F #1FA066

split-complementary

#251FA0 #A0661F #59A01F

monochromatic

#0D0B39 #19156D #251FA0 #3129D3 #605ADF

Accessibility & contrast

On white

11.78

#251FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#251FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251FA0

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251FA0	#FFFFFF	#000000	##FFFFFF
##251FA0	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA4

Deuteranopia (green-blind)

#00319E

Tritanopia (blue-blind)

#004760

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #251fa0;
/* rgb */ color: rgb(37, 31, 160);
/* oklch */ color: oklch(35.9% 0.195 272.7);

Tailwind

colors: {
  custom: {
    50: '#765ebd',
    500: '#251fa0',
    950: '#000000',
  },
}

SCSS

$custom: #251fa0;
$custom-light: #765ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#251fa0",
  "rgb": {
    "r": 37,
    "g": 31,
    "b": 160
  },
  "hsl": {
    "h": 242.791,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.35937,
    "c": 0.19488,
    "h": 272.7
  },
  "luminance": 0.03911
}

Semantic roles & 50–950 ramp

primary

#251FA0

secondary

#BEC358

accent

#EA3DE2

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #251FA0

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

Preview Lab → · Contrast checker → · Palette generator →