#251788#251788

#251788 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.173 H 276.1°. Best body text is #FFFFFF at 13.49:1 contrast (WCAG AA passes).

Color values

HEX	#251788
RGB	rgb(37, 23, 136)
HSL	hsl(247, 71%, 31%)
HSV	hsv(247, 83%, 53%)
CMYK	cmyk(72.8%, 83.1%, 0%, 46.7%)
CIE-LAB	lab(19.15, 42.01, -59.42)
CIE-LCH	lch(19.15, 72.77, 305.26°)
OKLab	oklab(32.17% 0.0184 -0.1718)
OKLCH	oklch(32.17% 0.173 276.1)
XYZ	xyz(5.5118, 2.7832, 23.5345)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251788 #7A8817

analogous

#174188 #251788 #5D1788

triadic

#251788 #882517 #178825

tetradic

#251788 #881741 #7A8817 #17885D

square

#251788 #881741 #7A8817 #17885D

split-complementary

#251788 #885D17 #418817

monochromatic

#09051F #170E54 #251788 #3320BC #503BDE

Accessibility & contrast

On white

13.49

#251788 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#251788 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251788

13.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251788	#FFFFFF	#000000	##FFFFFF
##251788	1.00	13.49	1.56	13.49
#FFFFFF	13.49	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002986

Tritanopia (blue-blind)

#003A50

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #251788;
/* rgb */ color: rgb(37, 23, 136);
/* oklch */ color: oklch(32.2% 0.173 276.1);

Tailwind

colors: {
  custom: {
    50: '#7158ac',
    500: '#251788',
    950: '#000000',
  },
}

SCSS

$custom: #251788;
$custom-light: #7158ac;
$custom-dark: #000000;

JSON

{
  "hex": "#251788",
  "rgb": {
    "r": 37,
    "g": 23,
    "b": 136
  },
  "hsl": {
    "h": 247.434,
    "s": 71.069,
    "l": 31.176
  },
  "oklch": {
    "l": 0.32175,
    "c": 0.17273,
    "h": 276.1
  },
  "luminance": 0.02784
}

Semantic roles & 50–950 ramp

primary

#251788

secondary

#ACBC3F

accent

#EE3AD8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #251788

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

Preview Lab → · Contrast checker → · Palette generator →