#151B9E#151B9E

#151B9E is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.4% C 0.200 H 268.0°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX	#151B9E
RGB	rgb(21, 27, 158)
HSL	hsl(237, 77%, 35%)
HSV	hsv(237, 87%, 62%)
CMYK	cmyk(86.7%, 82.9%, 0%, 38%)
CIE-LAB	lab(21.62, 46.13, -68.99)
CIE-LCH	lch(21.62, 82.99, 303.77°)
OKLab	oklab(34.42% -0.0069 -0.1998)
OKLCH	oklch(34.42% 0.2 268)
XYZ	xyz(6.8706, 3.4111, 32.6374)
Luminance	0.0341 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B9E #9E9815

analogous

#15609E #151B9E #53159E

triadic

#151B9E #9E151B #1B9E15

tetradic

#151B9E #9E1560 #9E9815 #159E53

square

#151B9E #9E1560 #9E9815 #159E53

split-complementary

#151B9E #9E5315 #609E15

monochromatic

#070932 #0E1268 #151B9E #1C24D4 #474EE7

Accessibility & contrast

On white

12.48

#151B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#151B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B9E

12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B9E	#FFFFFF	#000000	##FFFFFF
##151B9E	1.00	12.48	1.68	12.48
#FFFFFF	12.48	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA2

Deuteranopia (green-blind)

#002C9C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #151b9e;
/* rgb */ color: rgb(21, 27, 158);
/* oklch */ color: oklch(34.4% 0.200 268.0);

Tailwind

colors: {
  custom: {
    50: '#715bbc',
    500: '#151b9e',
    950: '#000000',
  },
}

SCSS

$custom: #151b9e;
$custom-light: #715bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#151b9e",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 237.372,
    "s": 76.536,
    "l": 35.098
  },
  "oklch": {
    "l": 0.34422,
    "c": 0.19994,
    "h": 268
  },
  "luminance": 0.03412
}

Semantic roles & 50–950 ramp

primary

#151B9E

secondary

#C7C247

accent

#EB35F3

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #151B9E

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

Preview Lab → · Contrast checker → · Palette generator →