#151B43#151B43

#151B43 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.3% C 0.075 H 273.1°. Best body text is #FFFFFF at 16.54:1 contrast (WCAG AA passes).

Color values

HEX	#151B43
RGB	rgb(21, 27, 67)
HSL	hsl(232, 52%, 17%)
HSV	hsv(232, 69%, 26%)
CMYK	cmyk(68.7%, 59.7%, 0%, 73.7%)
CIE-LAB	lab(11.61, 12.11, -26.23)
CIE-LCH	lch(11.61, 28.89, 294.78°)
OKLab	oklab(24.27% 0.004 -0.0752)
OKLCH	oklch(24.27% 0.075 273.1)
XYZ	xyz(1.7140, 1.3484, 5.4790)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B43 #433D15

analogous

#153243 #151B43 #261543

triadic

#151B43 #43151B #1B4315

tetradic

#151B43 #431532 #433D15 #154326

square

#151B43 #431532 #433D15 #154326

split-complementary

#151B43 #432615 #324315

monochromatic

#070917 #070917 #151B43 #242E72 #3241A0

Accessibility & contrast

On white

16.54

#151B43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#151B43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B43

16.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B43	#FFFFFF	#000000	##FFFFFF
##151B43	1.00	16.54	1.27	16.54
#FFFFFF	16.54	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#042144

Deuteranopia (green-blind)

#001D42

Tritanopia (blue-blind)

#00242C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #151b43;
/* rgb */ color: rgb(21, 27, 67);
/* oklch */ color: oklch(24.3% 0.075 273.1);

Tailwind

colors: {
  custom: {
    50: '#585777',
    500: '#151b43',
    950: '#000000',
  },
}

SCSS

$custom: #151b43;
$custom-light: #585777;
$custom-dark: #000000;

JSON

{
  "hex": "#151b43",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 67
  },
  "hsl": {
    "h": 232.174,
    "s": 52.273,
    "l": 17.255
  },
  "oklch": {
    "l": 0.24267,
    "c": 0.07532,
    "h": 273.1
  },
  "luminance": 0.01349
}

Semantic roles & 50–950 ramp

primary

#151B43

secondary

#7B7239

accent

#C94CDC

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #151B43

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

Preview Lab → · Contrast checker → · Palette generator →