#151B38#151B38

#151B38 is a very dark, muted blue. Relative luminance 0.012; OKLCH L 23.4% C 0.056 H 272.5°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#151B38
RGB	rgb(21, 27, 56)
HSL	hsl(230, 45%, 15%)
HSV	hsv(230, 63%, 22%)
CMYK	cmyk(62.5%, 51.8%, 0%, 78%)
CIE-LAB	lab(10.77, 7.62, -19.79)
CIE-LCH	lch(10.77, 21.21, 291.05°)
OKLab	oklab(23.36% 0.0025 -0.0563)
OKLCH	oklch(23.36% 0.056 272.5)
XYZ	xyz(1.4148, 1.2287, 3.9032)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B38 #383215

analogous

#152D38 #151B38 #201538

triadic

#151B38 #38151B #1B3815

tetradic

#151B38 #38152D #383215 #153820

square

#151B38 #38152D #383215 #153820

split-complementary

#151B38 #382015 #2D3815

monochromatic

#080B16 #080B16 #151B38 #263065 #364691

Accessibility & contrast

On white

16.86

#151B38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#151B38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B38

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B38	#FFFFFF	#000000	##FFFFFF
##151B38	1.00	16.86	1.25	16.86
#FFFFFF	16.86	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E1F39

Deuteranopia (green-blind)

#0A1C37

Tritanopia (blue-blind)

#052126

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #151b38;
/* rgb */ color: rgb(21, 27, 56);
/* oklch */ color: oklch(23.4% 0.056 272.5);

Tailwind

colors: {
  custom: {
    50: '#56576f',
    500: '#151b38',
    950: '#000000',
  },
}

SCSS

$custom: #151b38;
$custom-light: #56576f;
$custom-dark: #000000;

JSON

{
  "hex": "#151b38",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 56
  },
  "hsl": {
    "h": 229.714,
    "s": 45.455,
    "l": 15.098
  },
  "oklch": {
    "l": 0.23358,
    "c": 0.05634,
    "h": 272.5
  },
  "luminance": 0.01229
}

Semantic roles & 50–950 ramp

primary

#151B38

secondary

#6F663A

accent

#BF53D5

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #151B38

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

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