#151D3C#151D3C

#151D3C is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.2% C 0.060 H 270.5°. Best body text is #FFFFFF at 16.50:1 contrast (WCAG AA passes).

Color values

HEX	#151D3C
RGB	rgb(21, 29, 60)
HSL	hsl(228, 48%, 16%)
HSV	hsv(228, 65%, 24%)
CMYK	cmyk(65%, 51.7%, 0%, 76.5%)
CIE-LAB	lab(11.72, 7.70, -21.13)
CIE-LCH	lch(11.72, 22.49, 290.03°)
OKLab	oklab(24.18% 0.0005 -0.0602)
OKLCH	oklch(24.18% 0.06 270.5)
XYZ	xyz(1.5640, 1.3643, 4.4550)
Luminance	0.0136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D3C #3C3415

analogous

#15303C #151D3C #20153C

triadic

#151D3C #3C151D #1D3C15

tetradic

#151D3C #3C1530 #3C3415 #153C20

square

#151D3C #3C1530 #3C3415 #153C20

split-complementary

#151D3C #3C2015 #303C15

monochromatic

#080B17 #080B17 #151D3C #253369 #354997

Accessibility & contrast

On white

16.50

#151D3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#151D3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D3C

16.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D3C	#FFFFFF	#000000	##FFFFFF
##151D3C	1.00	16.50	1.27	16.50
#FFFFFF	16.50	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F213D

Deuteranopia (green-blind)

#0A1D3B

Tritanopia (blue-blind)

#012429

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #151d3c;
/* rgb */ color: rgb(21, 29, 60);
/* oklch */ color: oklch(24.2% 0.060 270.5);

Tailwind

colors: {
  custom: {
    50: '#565872',
    500: '#151d3c',
    950: '#000000',
  },
}

SCSS

$custom: #151d3c;
$custom-light: #565872;
$custom-dark: #000000;

JSON

{
  "hex": "#151d3c",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 60
  },
  "hsl": {
    "h": 227.692,
    "s": 48.148,
    "l": 15.882
  },
  "oklch": {
    "l": 0.24176,
    "c": 0.06017,
    "h": 270.5
  },
  "luminance": 0.01364
}

Semantic roles & 50–950 ramp

primary

#151D3C

secondary

#746839

accent

#BC50D8

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #151D3C

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

Preview Lab → · Contrast checker → · Palette generator →