#151C4D#151C4D

#151C4D is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.4% C 0.090 H 272.2°. Best body text is #FFFFFF at 16.09:1 contrast (WCAG AA passes).

Color values

HEX	#151C4D
RGB	rgb(21, 28, 77)
HSL	hsl(233, 57%, 19%)
HSV	hsv(233, 73%, 30%)
CMYK	cmyk(72.7%, 63.6%, 0%, 69.8%)
CIE-LAB	lab(12.77, 15.48, -31.29)
CIE-LCH	lch(12.77, 34.91, 296.32°)
OKLab	oklab(25.41% 0.0034 -0.0901)
OKLCH	oklch(25.41% 0.09 272.2)
XYZ	xyz(2.0636, 1.5256, 7.2055)
Luminance	0.0153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C4D #4D4615

analogous

#15384D #151C4D #2A154D

triadic

#151C4D #4D151C #1C4D15

tetradic

#151C4D #4D1538 #4D4615 #154D2A

square

#151C4D #4D1538 #4D4615 #154D2A

split-complementary

#151C4D #4D2A15 #384D15

monochromatic

#070918 #080B1D #151C4D #222D7D #2F3FAD

Accessibility & contrast

On white

16.09

#151C4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#151C4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C4D

16.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C4D	#FFFFFF	#000000	##FFFFFF
##151C4D	1.00	16.09	1.31	16.09
#FFFFFF	16.09	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00244F

Deuteranopia (green-blind)

#001F4C

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #151c4d;
/* rgb */ color: rgb(21, 28, 77);
/* oklch */ color: oklch(25.4% 0.090 272.2);

Tailwind

colors: {
  custom: {
    50: '#5a577f',
    500: '#151c4d',
    950: '#000000',
  },
}

SCSS

$custom: #151c4d;
$custom-light: #5a577f;
$custom-dark: #000000;

JSON

{
  "hex": "#151c4d",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 77
  },
  "hsl": {
    "h": 232.5,
    "s": 57.143,
    "l": 19.216
  },
  "oklch": {
    "l": 0.25405,
    "c": 0.09014,
    "h": 272.2
  },
  "luminance": 0.01526
}

Semantic roles & 50–950 ramp

primary

#151C4D

secondary

#857B39

accent

#CD47E0

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #151C4D

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

Preview Lab → · Contrast checker → · Palette generator →