#151D3E#151D3E

#151D3E is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.3% C 0.064 H 270.8°. Best body text is #FFFFFF at 16.44:1 contrast (WCAG AA passes).

Color values

HEX	#151D3E
RGB	rgb(21, 29, 62)
HSL	hsl(228, 49%, 16%)
HSV	hsv(228, 66%, 24%)
CMYK	cmyk(66.1%, 53.2%, 0%, 75.7%)
CIE-LAB	lab(11.86, 8.52, -22.31)
CIE-LCH	lch(11.86, 23.88, 290.90°)
OKLab	oklab(24.33% 0.0009 -0.0636)
OKLCH	oklch(24.33% 0.064 270.8)
XYZ	xyz(1.6178, 1.3858, 4.7387)
Luminance	0.0139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D3E #3E3615

analogous

#15323E #151D3E #22153E

triadic

#151D3E #3E151D #1D3E15

tetradic

#151D3E #3E1532 #3E3615 #153E22

square

#151D3E #3E1532 #3E3615 #153E22

split-complementary

#151D3E #3E2215 #323E15

monochromatic

#080B17 #080B17 #151D3E #24326C #344899

Accessibility & contrast

On white

16.44

#151D3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#151D3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D3E

16.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D3E	#FFFFFF	#000000	##FFFFFF
##151D3E	1.00	16.44	1.28	16.44
#FFFFFF	16.44	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D213F

Deuteranopia (green-blind)

#081E3D

Tritanopia (blue-blind)

#00242A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #151d3e;
/* rgb */ color: rgb(21, 29, 62);
/* oklch */ color: oklch(24.3% 0.064 270.8);

Tailwind

colors: {
  custom: {
    50: '#575873',
    500: '#151d3e',
    950: '#000000',
  },
}

SCSS

$custom: #151d3e;
$custom-light: #575873;
$custom-dark: #000000;

JSON

{
  "hex": "#151d3e",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 62
  },
  "hsl": {
    "h": 228.293,
    "s": 49.398,
    "l": 16.275
  },
  "oklch": {
    "l": 0.24334,
    "c": 0.06365,
    "h": 270.8
  },
  "luminance": 0.01386
}

Semantic roles & 50–950 ramp

primary

#151D3E

secondary

#766A39

accent

#BE4FD9

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #151D3E

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

Preview Lab → · Contrast checker → · Palette generator →