#251681#251681

#251681 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.2% C 0.165 H 277.3°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#251681
RGB	rgb(37, 22, 129)
HSL	hsl(248, 71%, 30%)
HSV	hsv(248, 83%, 51%)
CMYK	cmyk(71.3%, 82.9%, 0%, 49.4%)
CIE-LAB	lab(18.15, 40.28, -56.66)
CIE-LCH	lch(18.15, 69.52, 305.41°)
OKLab	oklab(31.24% 0.0209 -0.1637)
OKLCH	oklch(31.24% 0.165 277.3)
XYZ	xyz(5.0110, 2.5517, 20.9931)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251681 #728116

analogous

#163D81 #251681 #5B1681

triadic

#251681 #812516 #168125

tetradic

#251681 #81163D #728116 #16815B

square

#251681 #81163D #728116 #16815B

split-complementary

#251681 #815B16 #3D8116

monochromatic

#07041A #160D4D #251681 #341FB5 #4C35DD

Accessibility & contrast

On white

13.90

#251681 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#251681 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251681

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251681	#FFFFFF	#000000	##FFFFFF
##251681	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003184

Deuteranopia (green-blind)

#00287F

Tritanopia (blue-blind)

#00374C

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #251681;
/* rgb */ color: rgb(37, 22, 129);
/* oklch */ color: oklch(31.2% 0.165 277.3);

Tailwind

colors: {
  custom: {
    50: '#6f57a7',
    500: '#251681',
    950: '#000000',
  },
}

SCSS

$custom: #251681;
$custom-light: #6f57a7;
$custom-dark: #000000;

JSON

{
  "hex": "#251681",
  "rgb": {
    "r": 37,
    "g": 22,
    "b": 129
  },
  "hsl": {
    "h": 248.411,
    "s": 70.861,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31237,
    "c": 0.16504,
    "h": 277.3
  },
  "luminance": 0.02552
}

Semantic roles & 50–950 ramp

primary

#251681

secondary

#A5B63D

accent

#EE3AD4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #251681

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

Preview Lab → · Contrast checker → · Palette generator →