#151C3C#151C3C

#151C3C is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.9% C 0.062 H 271.7°. Best body text is #FFFFFF at 16.62:1 contrast (WCAG AA passes).

Color values

HEX	#151C3C
RGB	rgb(21, 28, 60)
HSL	hsl(229, 48%, 16%)
HSV	hsv(229, 65%, 24%)
CMYK	cmyk(65%, 53.3%, 0%, 76.5%)
CIE-LAB	lab(11.39, 8.47, -21.66)
CIE-LCH	lch(11.39, 23.25, 291.36°)
OKLab	oklab(23.92% 0.0019 -0.0617)
OKLCH	oklch(23.92% 0.062 271.7)
XYZ	xyz(1.5399, 1.3161, 4.4470)
Luminance	0.0132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C3C #3C3515

analogous

#152F3C #151C3C #21153C

triadic

#151C3C #3C151C #1C3C15

tetradic

#151C3C #3C152F #3C3515 #153C21

square

#151C3C #3C152F #3C3515 #153C21

split-complementary

#151C3C #3C2115 #2F3C15

monochromatic

#080B17 #080B17 #151C3C #253169 #354697

Accessibility & contrast

On white

16.62

#151C3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#151C3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C3C

16.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C3C	#FFFFFF	#000000	##FFFFFF
##151C3C	1.00	16.62	1.26	16.62
#FFFFFF	16.62	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D203D

Deuteranopia (green-blind)

#081D3B

Tritanopia (blue-blind)

#012329

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #151c3c;
/* rgb */ color: rgb(21, 28, 60);
/* oklch */ color: oklch(23.9% 0.062 271.7);

Tailwind

colors: {
  custom: {
    50: '#565772',
    500: '#151c3c',
    950: '#000000',
  },
}

SCSS

$custom: #151c3c;
$custom-light: #565772;
$custom-dark: #000000;

JSON

{
  "hex": "#151c3c",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 60
  },
  "hsl": {
    "h": 229.231,
    "s": 48.148,
    "l": 15.882
  },
  "oklch": {
    "l": 0.23924,
    "c": 0.06176,
    "h": 271.7
  },
  "luminance": 0.01316
}

Semantic roles & 50–950 ramp

primary

#151C3C

secondary

#746939

accent

#BF50D8

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #151C3C

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

Preview Lab → · Contrast checker → · Palette generator →