#251CB4#251CB4

#251CB4 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 38.0% C 0.220 H 271.3°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#251CB4
RGB	rgb(37, 28, 180)
HSL	hsl(244, 73%, 41%)
HSV	hsv(244, 84%, 71%)
CMYK	cmyk(79.4%, 84.4%, 0%, 29.4%)
CIE-LAB	lab(25.31, 53.25, -76.12)
CIE-LCH	lch(25.31, 92.90, 304.98°)
OKLab	oklab(37.98% 0.005 -0.2202)
OKLCH	oklch(37.98% 0.22 271.3)
XYZ	xyz(9.4136, 4.5180, 43.5471)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251CB4 #ABB41C

analogous

#1C5FB4 #251CB4 #711CB4

triadic

#251CB4 #B4251C #1CB425

tetradic

#251CB4 #B41C5F #ABB41C #1CB471

square

#251CB4 #B41C5F #ABB41C #1CB471

split-complementary

#251CB4 #B4711C #5FB41C

monochromatic

#0F0C4A #1A147F #251CB4 #392FDF #6B64E7

Accessibility & contrast

On white

11.03

#251CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#251CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251CB4

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251CB4	#FFFFFF	#000000	##FFFFFF
##251CB4	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B8

Deuteranopia (green-blind)

#0034B2

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #251cb4;
/* rgb */ color: rgb(37, 28, 180);
/* oklch */ color: oklch(38.0% 0.220 271.3);

Tailwind

colors: {
  custom: {
    50: '#7b5ecc',
    500: '#251cb4',
    950: '#000000',
  },
}

SCSS

$custom: #251cb4;
$custom-light: #7b5ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#251cb4",
  "rgb": {
    "r": 37,
    "g": 28,
    "b": 180
  },
  "hsl": {
    "h": 243.553,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.37977,
    "c": 0.2203,
    "h": 271.3
  },
  "luminance": 0.04519
}

Semantic roles & 50–950 ramp

primary

#251CB4

secondary

#C5CC60

accent

#F038E5

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #251CB4

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

Preview Lab → · Contrast checker → · Palette generator →