#251799#251799

#251799 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.2% C 0.193 H 274.0°. Best body text is #FFFFFF at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#251799
RGB	rgb(37, 23, 153)
HSL	hsl(246, 74%, 35%)
HSV	hsv(246, 85%, 60%)
CMYK	cmyk(75.8%, 85%, 0%, 40%)
CIE-LAB	lab(21.23, 47.28, -66.55)
CIE-LCH	lch(21.23, 81.63, 305.39°)
OKLab	oklab(34.21% 0.0134 -0.1924)
OKLCH	oklch(34.21% 0.193 274)
XYZ	xyz(6.8172, 3.3053, 30.4095)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251799 #8B9917

analogous

#174A99 #251799 #661799

triadic

#251799 #992517 #179925

tetradic

#251799 #99174A #8B9917 #179966

square

#251799 #99174A #8B9917 #179966

split-complementary

#251799 #996617 #4A9917

monochromatic

#0B072F #180F64 #251799 #321FCE #5847E3

Accessibility & contrast

On white

12.64

#251799 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#251799 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251799

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251799	#FFFFFF	#000000	##FFFFFF
##251799	1.00	12.64	1.66	12.64
#FFFFFF	12.64	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00399C

Deuteranopia (green-blind)

#002D97

Tritanopia (blue-blind)

#00415A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #251799;
/* rgb */ color: rgb(37, 23, 153);
/* oklch */ color: oklch(34.2% 0.193 274.0);

Tailwind

colors: {
  custom: {
    50: '#7559b8',
    500: '#251799',
    950: '#000000',
  },
}

SCSS

$custom: #251799;
$custom-light: #7559b8;
$custom-dark: #000000;

JSON

{
  "hex": "#251799",
  "rgb": {
    "r": 37,
    "g": 23,
    "b": 153
  },
  "hsl": {
    "h": 246.462,
    "s": 73.864,
    "l": 34.51
  },
  "oklch": {
    "l": 0.34206,
    "c": 0.19289,
    "h": 274
  },
  "luminance": 0.03306
}

Semantic roles & 50–950 ramp

primary

#251799

secondary

#B7C547

accent

#F137DD

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #251799

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

Preview Lab → · Contrast checker → · Palette generator →