#151C81#151C81

#151C81 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.164 H 269.3°. Best body text is #FFFFFF at 13.86:1 contrast (WCAG AA passes).

Color values

HEX	#151C81
RGB	rgb(21, 28, 129)
HSL	hsl(236, 72%, 29%)
HSV	hsv(236, 84%, 51%)
CMYK	cmyk(83.7%, 78.3%, 0%, 49.4%)
CIE-LAB	lab(18.25, 35.70, -56.53)
CIE-LCH	lch(18.25, 66.85, 302.27°)
OKLab	oklab(31.03% -0.002 -0.1638)
OKLCH	oklch(31.03% 0.164 269.3)
XYZ	xyz(4.6856, 2.5744, 21.0146)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C81 #817A15

analogous

#155281 #151C81 #441581

triadic

#151C81 #81151C #1C8115

tetradic

#151C81 #811552 #817A15 #158144

square

#151C81 #811552 #817A15 #158144

split-complementary

#151C81 #814415 #528115

monochromatic

#04061A #0C114C #151C81 #1E27B6 #333EDE

Accessibility & contrast

On white

13.86

#151C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#151C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C81

13.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C81	#FFFFFF	#000000	##FFFFFF
##151C81	1.00	13.86	1.52	13.86
#FFFFFF	13.86	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#00277F

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #151c81;
/* rgb */ color: rgb(21, 28, 129);
/* oklch */ color: oklch(31.0% 0.164 269.3);

Tailwind

colors: {
  custom: {
    50: '#6959a7',
    500: '#151c81',
    950: '#000000',
  },
}

SCSS

$custom: #151c81;
$custom-light: #6959a7;
$custom-dark: #000000;

JSON

{
  "hex": "#151c81",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 129
  },
  "hsl": {
    "h": 236.111,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.31031,
    "c": 0.16378,
    "h": 269.3
  },
  "luminance": 0.02575
}

Semantic roles & 50–950 ramp

primary

#151C81

secondary

#B6AE3C

accent

#E339EF

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080410

muted

#7A797F

Preview Lab

Preview with #151C81

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

Preview Lab → · Contrast checker → · Palette generator →