#05172B#05172B

#05172B is a very dark, muted cyan. Relative luminance 0.008; OKLCH L 20.2% C 0.047 H 252.2°. Best body text is #FFFFFF at 18.04:1 contrast (WCAG AA passes).

Color values

HEX	#05172B
RGB	rgb(5, 23, 43)
HSL	hsl(212, 79%, 9%)
HSV	hsv(212, 88%, 17%)
CMYK	cmyk(88.4%, 46.5%, 0%, 83.1%)
CIE-LAB	lab(7.40, 1.07, -15.74)
CIE-LCH	lch(7.40, 15.77, 273.88°)
OKLab	oklab(20.17% -0.0144 -0.0449)
OKLCH	oklch(20.17% 0.047 252.2)
XYZ	xyz(0.8049, 0.8194, 2.4008)
Luminance	0.0082 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05172B #2B1905

analogous

#052A2B #05172B #06052B

triadic

#05172B #2B0517 #172B05

tetradic

#05172B #2B052A #2B1905 #052B06

square

#05172B #2B052A #2B1905 #052B06

split-complementary

#05172B #2B0605 #2A2B05

monochromatic

#030F1B #030F1B #05172B #0B3462 #125299

Accessibility & contrast

On white

18.04

#05172B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#05172B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05172B

18.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05172B	#FFFFFF	#000000	##FFFFFF
##05172B	1.00	18.04	1.16	18.04
#FFFFFF	18.04	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E182C

Deuteranopia (green-blind)

#08152B

Tritanopia (blue-blind)

#001C1E

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #05172b;
/* rgb */ color: rgb(5, 23, 43);
/* oklch */ color: oklch(20.2% 0.047 252.2);

Tailwind

colors: {
  custom: {
    50: '#4a5364',
    500: '#05172b',
    950: '#000000',
  },
}

SCSS

$custom: #05172b;
$custom-light: #4a5364;
$custom-dark: #000000;

JSON

{
  "hex": "#05172b",
  "rgb": {
    "r": 5,
    "g": 23,
    "b": 43
  },
  "hsl": {
    "h": 211.579,
    "s": 79.167,
    "l": 9.412
  },
  "oklch": {
    "l": 0.20167,
    "c": 0.04715,
    "h": 252.2
  },
  "luminance": 0.00819
}

Semantic roles & 50–950 ramp

primary

#05172B

secondary

#6D481F

accent

#9932F6

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #05172B

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

Preview Lab → · Contrast checker → · Palette generator →