#0D172B#0D172B

#0D172B is a very dark, muted blue. Relative luminance 0.009; OKLCH L 20.7% C 0.043 H 263.1°. Best body text is #FFFFFF at 17.88:1 contrast (WCAG AA passes).

Color values

HEX	#0D172B
RGB	rgb(13, 23, 43)
HSL	hsl(220, 54%, 11%)
HSV	hsv(220, 70%, 17%)
CMYK	cmyk(69.8%, 46.5%, 0%, 83.1%)
CIE-LAB	lab(7.88, 3.16, -14.94)
CIE-LCH	lch(7.88, 15.27, 281.94°)
OKLab	oklab(20.69% -0.0051 -0.0423)
OKLCH	oklch(20.69% 0.043 263.1)
XYZ	xyz(0.9083, 0.8727, 2.4056)
Luminance	0.0087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0D172B #2B210D

analogous

#0D262B #0D172B #120D2B

triadic

#0D172B #2B0D17 #172B0D

tetradic

#0D172B #2B0D26 #2B210D #0D2B12

square

#0D172B #2B0D26 #2B210D #0D2B12

split-complementary

#0D172B #2B120D #262B0D

monochromatic

#070D17 #070D17 #0D172B #1B305A #294989

Accessibility & contrast

On white

17.88

#0D172B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#0D172B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0D172B

17.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0D172B	#FFFFFF	#000000	##FFFFFF
##0D172B	1.00	17.88	1.17	17.88
#FFFFFF	17.88	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F192C

Deuteranopia (green-blind)

#0B162B

Tritanopia (blue-blind)

#001B1E

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #0d172b;
/* rgb */ color: rgb(13, 23, 43);
/* oklch */ color: oklch(20.7% 0.043 263.1);

Tailwind

colors: {
  custom: {
    50: '#4e5364',
    500: '#0d172b',
    950: '#000000',
  },
}

SCSS

$custom: #0d172b;
$custom-light: #4e5364;
$custom-dark: #000000;

JSON

{
  "hex": "#0d172b",
  "rgb": {
    "r": 13,
    "g": 23,
    "b": 43
  },
  "hsl": {
    "h": 220,
    "s": 53.571,
    "l": 10.98
  },
  "oklch": {
    "l": 0.20689,
    "c": 0.04263,
    "h": 263.1
  },
  "luminance": 0.00873
}

Semantic roles & 50–950 ramp

primary

#0D172B

secondary

#66532E

accent

#AC4BDD

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020205

muted

#78787A

Preview Lab

Preview with #0D172B

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

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