#151C2F#151C2F

#151C2F is a very dark, muted blue. Relative luminance 0.012; OKLCH L 23.0% C 0.038 H 267.9°. Best body text is #FFFFFF at 16.95:1 contrast (WCAG AA passes).

Color values

HEX	#151C2F
RGB	rgb(21, 28, 47)
HSL	hsl(224, 38%, 13%)
HSV	hsv(224, 55%, 18%)
CMYK	cmyk(55.3%, 40.4%, 0%, 81.6%)
CIE-LAB	lab(10.52, 3.31, -13.69)
CIE-LCH	lch(10.52, 14.08, 283.59°)
OKLab	oklab(22.98% -0.0014 -0.0384)
OKLCH	oklch(22.98% 0.038 267.9)
XYZ	xyz(1.2374, 1.1951, 2.8542)
Luminance	0.0120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C2F #2F2815

analogous

#15292F #151C2F #1B152F

triadic

#151C2F #2F151C #1C2F15

tetradic

#151C2F #2F1529 #2F2815 #152F1B

square

#151C2F #2F1529 #2F2815 #152F1B

split-complementary

#151C2F #2F1B15 #292F15

monochromatic

#090D15 #090D15 #151C2F #283559 #3B4E84

Accessibility & contrast

On white

16.95

#151C2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#151C2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C2F

16.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C2F	#FFFFFF	#000000	##FFFFFF
##151C2F	1.00	16.95	1.24	16.95
#FFFFFF	16.95	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151E30

Deuteranopia (green-blind)

#121B2F

Tritanopia (blue-blind)

#0B2023

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #151c2f;
/* rgb */ color: rgb(21, 28, 47);
/* oklch */ color: oklch(23.0% 0.038 267.9);

Tailwind

colors: {
  custom: {
    50: '#545767',
    500: '#151c2f',
    950: '#000000',
  },
}

SCSS

$custom: #151c2f;
$custom-light: #545767;
$custom-dark: #000000;

JSON

{
  "hex": "#151c2f",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 47
  },
  "hsl": {
    "h": 223.846,
    "s": 38.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.22976,
    "c": 0.03847,
    "h": 267.9
  },
  "luminance": 0.01195
}

Semantic roles & 50–950 ramp

primary

#151C2F

secondary

#655A3B

accent

#AF5ACE

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020306

muted

#78787A

Preview Lab

Preview with #151C2F

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

Preview Lab → · Contrast checker → · Palette generator →