#251FA6#251FA6

#251FA6 is a dark, highly saturated blue. Relative luminance 0.041; OKLCH L 36.6% C 0.202 H 272.2°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#251FA6
RGB	rgb(37, 31, 166)
HSL	hsl(243, 69%, 39%)
HSV	hsv(243, 81%, 65%)
CMYK	cmyk(77.7%, 81.3%, 0%, 34.9%)
CIE-LAB	lab(24.08, 47.57, -69.75)
CIE-LCH	lch(24.08, 84.42, 304.29°)
OKLab	oklab(36.64% 0.0076 -0.2018)
OKLCH	oklch(36.64% 0.202 272.2)
XYZ	xyz(8.1336, 4.1256, 36.4367)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251FA6 #A0A61F

analogous

#1F5CA6 #251FA6 #681FA6

triadic

#251FA6 #A6251F #1FA625

tetradic

#251FA6 #A61F5C #A0A61F #1FA668

square

#251FA6 #A61F5C #A0A61F #1FA668

split-complementary

#251FA6 #A6681F #5CA61F

monochromatic

#0E0C3F #1A1572 #251FA6 #322BD7 #645EE1

Accessibility & contrast

On white

11.51

#251FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#251FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251FA6

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251FA6	#FFFFFF	#000000	##FFFFFF
##251FA6	1.00	11.51	1.83	11.51
#FFFFFF	11.51	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AA

Deuteranopia (green-blind)

#0032A4

Tritanopia (blue-blind)

#004A63

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #251fa6;
/* rgb */ color: rgb(37, 31, 166);
/* oklch */ color: oklch(36.6% 0.202 272.2);

Tailwind

colors: {
  custom: {
    50: '#775ec2',
    500: '#251fa6',
    950: '#000000',
  },
}

SCSS

$custom: #251fa6;
$custom-light: #775ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#251fa6",
  "rgb": {
    "r": 37,
    "g": 31,
    "b": 166
  },
  "hsl": {
    "h": 242.667,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.36636,
    "c": 0.20198,
    "h": 272.2
  },
  "luminance": 0.04126
}

Semantic roles & 50–950 ramp

primary

#251FA6

secondary

#C1C55B

accent

#EB3CE4

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #251FA6

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

Preview Lab → · Contrast checker → · Palette generator →