#251BAA#251BAA

#251BAA is a dark, highly saturated blue. Relative luminance 0.041; OKLCH L 36.7% C 0.210 H 272.1°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#251BAA
RGB	rgb(37, 27, 170)
HSL	hsl(244, 73%, 39%)
HSV	hsv(244, 84%, 67%)
CMYK	cmyk(78.2%, 84.1%, 0%, 33.3%)
CIE-LAB	lab(23.93, 50.68, -72.42)
CIE-LCH	lch(23.93, 88.39, 304.98°)
OKLab	oklab(36.67% 0.0077 -0.2095)
OKLCH	oklch(36.67% 0.21 272.1)
XYZ	xyz(8.4081, 4.0785, 38.3665)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251BAA #A0AA1B

analogous

#1B58AA #251BAA #6C1BAA

triadic

#251BAA #AA251B #1BAA25

tetradic

#251BAA #AA1B58 #A0AA1B #1BAA6C

square

#251BAA #AA1B58 #A0AA1B #1BAA6C

split-complementary

#251BAA #AA6C1B #58AA1B

monochromatic

#0E0A40 #1A1375 #251BAA #3226DC #645BE5

Accessibility & contrast

On white

11.57

#251BAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#251BAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251BAA

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251BAA	#FFFFFF	#000000	##FFFFFF
##251BAA	1.00	11.57	1.82	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AE

Deuteranopia (green-blind)

#0032A8

Tritanopia (blue-blind)

#004A65

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #251baa;
/* rgb */ color: rgb(37, 27, 170);
/* oklch */ color: oklch(36.7% 0.210 272.1);

Tailwind

colors: {
  custom: {
    50: '#795dc5',
    500: '#251baa',
    950: '#000000',
  },
}

SCSS

$custom: #251baa;
$custom-light: #795dc5;
$custom-dark: #000000;

JSON

{
  "hex": "#251baa",
  "rgb": {
    "r": 37,
    "g": 27,
    "b": 170
  },
  "hsl": {
    "h": 244.196,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.3667,
    "c": 0.20964,
    "h": 272.1
  },
  "luminance": 0.04079
}

Semantic roles & 50–950 ramp

primary

#251BAA

secondary

#C1C958

accent

#EF39E3

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0413

muted

#7C7982

Preview Lab

Preview with #251BAA

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

Preview Lab → · Contrast checker → · Palette generator →