#151D2B#151D2B

#151D2B is a very dark, muted blue. Relative luminance 0.012; OKLCH L 23.0% C 0.030 H 261.3°. Best body text is #FFFFFF at 16.90:1 contrast (WCAG AA passes).

Color values

HEX	#151D2B
RGB	rgb(21, 29, 43)
HSL	hsl(218, 34%, 13%)
HSV	hsv(218, 51%, 17%)
CMYK	cmyk(51.2%, 32.6%, 0%, 83.1%)
CIE-LAB	lab(10.65, 1.06, -10.57)
CIE-LCH	lch(10.65, 10.62, 275.70°)
OKLab	oklab(23% -0.0045 -0.0294)
OKLCH	oklch(23% 0.03 261.3)
XYZ	xyz(1.1845, 1.2125, 2.4567)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D2B #2B2315

analogous

#15282B #151D2B #18152B

triadic

#151D2B #2B151D #1D2B15

tetradic

#151D2B #2B1528 #2B2315 #152B18

square

#151D2B #2B1528 #2B2315 #152B18

split-complementary

#151D2B #2B1815 #282B15

monochromatic

#0A0E15 #0A0E15 #151D2B #293954 #3D547D

Accessibility & contrast

On white

16.90

#151D2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#151D2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D2B

16.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D2B	#FFFFFF	#000000	##FFFFFF
##151D2B	1.00	16.90	1.24	16.90
#FFFFFF	16.90	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181E2C

Deuteranopia (green-blind)

#161C2B

Tritanopia (blue-blind)

#0D2022

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #151d2b;
/* rgb */ color: rgb(21, 29, 43);
/* oklch */ color: oklch(23.0% 0.030 261.3);

Tailwind

colors: {
  custom: {
    50: '#535864',
    500: '#151d2b',
    950: '#000000',
  },
}

SCSS

$custom: #151d2b;
$custom-light: #535864;
$custom-dark: #000000;

JSON

{
  "hex": "#151d2b",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 43
  },
  "hsl": {
    "h": 218.182,
    "s": 34.375,
    "l": 12.549
  },
  "oklch": {
    "l": 0.23002,
    "c": 0.02978,
    "h": 261.3
  },
  "luminance": 0.01213
}

Semantic roles & 50–950 ramp

primary

#151D2B

secondary

#61533B

accent

#A35DCA

background

#F4F5F5

surface

#E7E9EA

border

#C3C5C6

text

#020305

muted

#787879

Preview Lab

Preview with #151D2B

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

Preview Lab → · Contrast checker → · Palette generator →