#0D173A#0D173A

#0D173A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.9% C 0.069 H 268.2°. Best body text is #FFFFFF at 17.49:1 contrast (WCAG AA passes).

Color values

HEX	#0D173A
RGB	rgb(13, 23, 58)
HSL	hsl(227, 63%, 14%)
HSV	hsv(227, 78%, 23%)
CMYK	cmyk(77.6%, 60.3%, 0%, 77.3%)
CIE-LAB	lab(9.02, 9.72, -24.06)
CIE-LCH	lch(9.02, 25.95, 291.99°)
OKLab	oklab(21.93% -0.0021 -0.0691)
OKLCH	oklch(21.93% 0.069 268.2)
XYZ	xyz(1.2358, 1.0037, 4.1308)
Luminance	0.0100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0D173A #3A300D

analogous

#0D2E3A #0D173A #1A0D3A

triadic

#0D173A #3A0D17 #173A0D

tetradic

#0D173A #3A0D2E #3A300D #0D3A1A

square

#0D173A #3A0D2E #3A300D #0D3A1A

split-complementary

#0D173A #3A1A0D #2E3A0D

monochromatic

#060A19 #060A19 #0D173A #182B6C #233F9E

Accessibility & contrast

On white

17.49

#0D173A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0D173A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0D173A

17.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0D173A	#FFFFFF	#000000	##FFFFFF
##0D173A	1.00	17.49	1.20	17.49
#FFFFFF	17.49	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#031C3B

Deuteranopia (green-blind)

#001839

Tritanopia (blue-blind)

#001F25

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0d173a;
/* rgb */ color: rgb(13, 23, 58);
/* oklch */ color: oklch(21.9% 0.069 268.2);

Tailwind

colors: {
  custom: {
    50: '#525370',
    500: '#0d173a',
    950: '#000000',
  },
}

SCSS

$custom: #0d173a;
$custom-light: #525370;
$custom-dark: #000000;

JSON

{
  "hex": "#0d173a",
  "rgb": {
    "r": 13,
    "g": 23,
    "b": 58
  },
  "hsl": {
    "h": 226.667,
    "s": 63.38,
    "l": 13.922
  },
  "oklch": {
    "l": 0.21929,
    "c": 0.06913,
    "h": 268.2
  },
  "luminance": 0.01004
}

Semantic roles & 50–950 ramp

primary

#0D173A

secondary

#76652D

accent

#C241E6

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #0D173A

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

Preview Lab → · Contrast checker → · Palette generator →