#151B2D#151B2D

#151B2D is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.6% C 0.036 H 269.3°. Best body text is #FFFFFF at 17.12:1 contrast (WCAG AA passes).

Color values

HEX	#151B2D
RGB	rgb(21, 27, 45)
HSL	hsl(225, 36%, 13%)
HSV	hsv(225, 53%, 18%)
CMYK	cmyk(53.3%, 40%, 0%, 82.4%)
CIE-LAB	lab(10.05, 3.31, -12.96)
CIE-LCH	lch(10.05, 13.38, 284.33°)
OKLab	oklab(22.57% -0.0004 -0.0363)
OKLCH	oklch(22.57% 0.036 269.3)
XYZ	xyz(1.1747, 1.1327, 2.6388)
Luminance	0.0113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B2D #2D2715

analogous

#15272D #151B2D #1B152D

triadic

#151B2D #2D151B #1B2D15

tetradic

#151B2D #2D1527 #2D2715 #152D1B

square

#151B2D #2D1527 #2D2715 #152D1B

split-complementary

#151B2D #2D1B15 #272D15

monochromatic

#0A0D15 #0A0D15 #151B2D #283457 #3C4D80

Accessibility & contrast

On white

17.12

#151B2D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#151B2D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B2D

17.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B2D	#FFFFFF	#000000	##FFFFFF
##151B2D	1.00	17.12	1.23	17.12
#FFFFFF	17.12	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151D2E

Deuteranopia (green-blind)

#121B2D

Tritanopia (blue-blind)

#0D1F21

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #151b2d;
/* rgb */ color: rgb(21, 27, 45);
/* oklch */ color: oklch(22.6% 0.036 269.3);

Tailwind

colors: {
  custom: {
    50: '#545766',
    500: '#151b2d',
    950: '#000000',
  },
}

SCSS

$custom: #151b2d;
$custom-light: #545766;
$custom-dark: #000000;

JSON

{
  "hex": "#151b2d",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 45
  },
  "hsl": {
    "h": 225,
    "s": 36.364,
    "l": 12.941
  },
  "oklch": {
    "l": 0.22573,
    "c": 0.03634,
    "h": 269.3
  },
  "luminance": 0.01133
}

Semantic roles & 50–950 ramp

primary

#151B2D

secondary

#63593B

accent

#B05BCC

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020305

muted

#78787A

Preview Lab

Preview with #151B2D

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

Preview Lab → · Contrast checker → · Palette generator →