#0C174D#0C174D

#0C174D is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.8% C 0.100 H 268.4°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#0C174D
RGB	rgb(12, 23, 77)
HSL	hsl(230, 73%, 17%)
HSV	hsv(230, 84%, 30%)
CMYK	cmyk(84.4%, 70.1%, 0%, 69.8%)
CIE-LAB	lab(10.75, 17.89, -34.61)
CIE-LCH	lch(10.75, 38.96, 297.34°)
OKLab	oklab(23.76% -0.0027 -0.1001)
OKLCH	oklch(23.76% 0.1 268.4)
XYZ	xyz(1.7971, 1.2266, 7.1618)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0C174D #4D420C

analogous

#0C384D #0C174D #210C4D

triadic

#0C174D #4D0C17 #174D0C

tetradic

#0C174D #4D0C38 #4D420C #0C4D21

square

#0C174D #4D0C38 #4D420C #0C4D21

split-complementary

#0C174D #4D210C #384D0C

monochromatic

#04081A #04081A #0C174D #142782 #1D37B7

Accessibility & contrast

On white

16.86

#0C174D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#0C174D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0C174D

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0C174D	#FFFFFF	#000000	##FFFFFF
##0C174D	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)

#00204F

Deuteranopia (green-blind)

#001A4C

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #0c174d;
/* rgb */ color: rgb(12, 23, 77);
/* oklch */ color: oklch(23.8% 0.100 268.4);

Tailwind

colors: {
  custom: {
    50: '#57537f',
    500: '#0c174d',
    950: '#000000',
  },
}

SCSS

$custom: #0c174d;
$custom-light: #57537f;
$custom-dark: #000000;

JSON

{
  "hex": "#0c174d",
  "rgb": {
    "r": 12,
    "g": 23,
    "b": 77
  },
  "hsl": {
    "h": 229.846,
    "s": 73.034,
    "l": 17.451
  },
  "oklch": {
    "l": 0.23762,
    "c": 0.10014,
    "h": 268.4
  },
  "luminance": 0.01227
}

Semantic roles & 50–950 ramp

primary

#0C174D

secondary

#89792C

accent

#D138F0

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #0C174D

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

Preview Lab → · Contrast checker → · Palette generator →