#151B28#151B28

#151B28 is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.3% C 0.027 H 265.1°. Best body text is #FFFFFF at 17.22:1 contrast (WCAG AA passes).

Color values

HEX	#151B28
RGB	rgb(21, 27, 40)
HSL	hsl(221, 31%, 12%)
HSV	hsv(221, 48%, 16%)
CMYK	cmyk(47.5%, 32.5%, 0%, 84.3%)
CIE-LAB	lab(9.77, 1.47, -9.72)
CIE-LCH	lch(9.77, 9.83, 278.61°)
OKLab	oklab(22.26% -0.0023 -0.027)
OKLCH	oklch(22.26% 0.027 265.1)
XYZ	xyz(1.0841, 1.0964, 2.1616)
Luminance	0.0110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B28 #282215

analogous

#152528 #151B28 #191528

triadic

#151B28 #28151B #1B2815

tetradic

#151B28 #281525 #282215 #152819

square

#151B28 #281525 #282215 #152819

split-complementary

#151B28 #281915 #252815

monochromatic

#0B0E14 #0B0E14 #151B28 #2A3650 #3F5178

Accessibility & contrast

On white

17.22

#151B28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#151B28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B28

17.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B28	#FFFFFF	#000000	##FFFFFF
##151B28	1.00	17.22	1.22	17.22
#FFFFFF	17.22	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171C29

Deuteranopia (green-blind)

#151A28

Tritanopia (blue-blind)

#0F1E1F

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #151b28;
/* rgb */ color: rgb(21, 27, 40);
/* oklch */ color: oklch(22.3% 0.027 265.1);

Tailwind

colors: {
  custom: {
    50: '#535761',
    500: '#151b28',
    950: '#000000',
  },
}

SCSS

$custom: #151b28;
$custom-light: #535761;
$custom-dark: #000000;

JSON

{
  "hex": "#151b28",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 40
  },
  "hsl": {
    "h": 221.053,
    "s": 31.148,
    "l": 11.961
  },
  "oklch": {
    "l": 0.22262,
    "c": 0.02712,
    "h": 265.1
  },
  "luminance": 0.01096
}

Semantic roles & 50–950 ramp

primary

#151B28

secondary

#5D533C

accent

#A760C7

background

#F4F5F5

surface

#E7E9EA

border

#C3C5C6

text

#020305

muted

#787879

Preview Lab

Preview with #151B28

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

Preview Lab → · Contrast checker → · Palette generator →