#0C174C#0C174C

#0C174C is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.7% C 0.099 H 268.4°. Best body text is #FFFFFF at 16.90:1 contrast (WCAG AA passes).

Color values

HEX	#0C174C
RGB	rgb(12, 23, 76)
HSL	hsl(230, 73%, 17%)
HSV	hsv(230, 84%, 30%)
CMYK	cmyk(84.2%, 69.7%, 0%, 70.2%)
CIE-LAB	lab(10.65, 17.46, -34.09)
CIE-LCH	lch(10.65, 38.30, 297.13°)
OKLab	oklab(23.66% -0.0027 -0.0986)
OKLCH	oklch(23.66% 0.099 268.4)
XYZ	xyz(1.7621, 1.2126, 6.9773)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0C174C #4C410C

analogous

#0C374C #0C174C #210C4C

triadic

#0C174C #4C0C17 #174C0C

tetradic

#0C174C #4C0C37 #4C410C #0C4C21

square

#0C174C #4C0C37 #4C410C #0C4C21

split-complementary

#0C174C #4C210C #374C0C

monochromatic

#04081A #04081A #0C174C #142781 #1D37B6

Accessibility & contrast

On white

16.90

#0C174C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#0C174C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0C174C

16.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0C174C	#FFFFFF	#000000	##FFFFFF
##0C174C	1.00	16.90	1.24	16.90
#FFFFFF	16.90	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204E

Deuteranopia (green-blind)

#001A4B

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #0c174c;
/* rgb */ color: rgb(12, 23, 76);
/* oklch */ color: oklch(23.7% 0.099 268.4);

Tailwind

colors: {
  custom: {
    50: '#57537f',
    500: '#0c174c',
    950: '#000000',
  },
}

SCSS

$custom: #0c174c;
$custom-light: #57537f;
$custom-dark: #000000;

JSON

{
  "hex": "#0c174c",
  "rgb": {
    "r": 12,
    "g": 23,
    "b": 76
  },
  "hsl": {
    "h": 229.688,
    "s": 72.727,
    "l": 17.255
  },
  "oklch": {
    "l": 0.23656,
    "c": 0.09861,
    "h": 268.4
  },
  "luminance": 0.01213
}

Semantic roles & 50–950 ramp

primary

#0C174C

secondary

#88782C

accent

#D038EF

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #0C174C

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

Preview Lab → · Contrast checker → · Palette generator →