#151C2E#151C2E

#151C2E is a very dark, muted blue. Relative luminance 0.012; OKLCH L 22.9% C 0.037 H 267.3°. Best body text is #FFFFFF at 16.97:1 contrast (WCAG AA passes).

Color values

HEX	#151C2E
RGB	rgb(21, 28, 46)
HSL	hsl(223, 37%, 13%)
HSV	hsv(223, 54%, 18%)
CMYK	cmyk(54.3%, 39.1%, 0%, 82%)
CIE-LAB	lab(10.46, 2.93, -13.05)
CIE-LCH	lch(10.46, 13.37, 282.65°)
OKLab	oklab(22.91% -0.0017 -0.0366)
OKLCH	oklch(22.91% 0.037 267.3)
XYZ	xyz(1.2175, 1.1871, 2.7492)
Luminance	0.0119 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C2E #2E2715

analogous

#15282E #151C2E #1A152E

triadic

#151C2E #2E151C #1C2E15

tetradic

#151C2E #2E1528 #2E2715 #152E1A

square

#151C2E #2E1528 #2E2715 #152E1A

split-complementary

#151C2E #2E1A15 #282E15

monochromatic

#0A0D15 #0A0D15 #151C2E #283658 #3B4F82

Accessibility & contrast

On white

16.97

#151C2E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#151C2E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C2E

16.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C2E	#FFFFFF	#000000	##FFFFFF
##151C2E	1.00	16.97	1.24	16.97
#FFFFFF	16.97	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161E2F

Deuteranopia (green-blind)

#131B2E

Tritanopia (blue-blind)

#0C2022

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #151c2e;
/* rgb */ color: rgb(21, 28, 46);
/* oklch */ color: oklch(22.9% 0.037 267.3);

Tailwind

colors: {
  custom: {
    50: '#545766',
    500: '#151c2e',
    950: '#000000',
  },
}

SCSS

$custom: #151c2e;
$custom-light: #545766;
$custom-dark: #000000;

JSON

{
  "hex": "#151c2e",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 46
  },
  "hsl": {
    "h": 223.2,
    "s": 37.313,
    "l": 13.137
  },
  "oklch": {
    "l": 0.22911,
    "c": 0.03663,
    "h": 267.3
  },
  "luminance": 0.01187
}

Semantic roles & 50–950 ramp

primary

#151C2E

secondary

#64593B

accent

#AD5BCD

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020306

muted

#78787A

Preview Lab

Preview with #151C2E

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

Preview Lab → · Contrast checker → · Palette generator →