#151B2A#151B2A

#151B2A is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.4% C 0.031 H 267.2°. Best body text is #FFFFFF at 17.18:1 contrast (WCAG AA passes).

Color values

HEX	#151B2A
RGB	rgb(21, 27, 42)
HSL	hsl(223, 33%, 12%)
HSV	hsv(223, 50%, 16%)
CMYK	cmyk(50%, 35.7%, 0%, 83.5%)
CIE-LAB	lab(9.88, 2.20, -11.03)
CIE-LCH	lch(9.88, 11.25, 281.27°)
OKLab	oklab(22.38% -0.0015 -0.0308)
OKLCH	oklch(22.38% 0.031 267.2)
XYZ	xyz(1.1190, 1.1104, 2.3454)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B2A #2A2415

analogous

#15262A #151B2A #1A152A

triadic

#151B2A #2A151B #1B2A15

tetradic

#151B2A #2A1526 #2A2415 #152A1A

square

#151B2A #2A1526 #2A2415 #152A1A

split-complementary

#151B2A #2A1A15 #262A15

monochromatic

#0A0D14 #0A0D14 #151B2A #293553 #3E4F7C

Accessibility & contrast

On white

17.18

#151B2A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#151B2A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B2A

17.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B2A	#FFFFFF	#000000	##FFFFFF
##151B2A	1.00	17.18	1.22	17.18
#FFFFFF	17.18	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161C2B

Deuteranopia (green-blind)

#141A2A

Tritanopia (blue-blind)

#0E1E20

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #151b2a;
/* rgb */ color: rgb(21, 27, 42);
/* oklch */ color: oklch(22.4% 0.031 267.2);

Tailwind

colors: {
  custom: {
    50: '#535763',
    500: '#151b2a',
    950: '#000000',
  },
}

SCSS

$custom: #151b2a;
$custom-light: #535763;
$custom-dark: #000000;

JSON

{
  "hex": "#151b2a",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 42
  },
  "hsl": {
    "h": 222.857,
    "s": 33.333,
    "l": 12.353
  },
  "oklch": {
    "l": 0.22383,
    "c": 0.0308,
    "h": 267.2
  },
  "luminance": 0.0111
}

Semantic roles & 50–950 ramp

primary

#151B2A

secondary

#5F553B

accent

#AB5EC9

background

#F4F5F5

surface

#E7E9EA

border

#C3C5C6

text

#020305

muted

#787879

Preview Lab

Preview with #151B2A

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

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