#17303D#17303D

#17303D is a dark, muted cyan. Relative luminance 0.026; OKLCH L 29.5% C 0.039 H 232.9°. Best body text is #FFFFFF at 13.76:1 contrast (WCAG AA passes).

Color values

HEX	#17303D
RGB	rgb(23, 48, 61)
HSL	hsl(201, 45%, 16%)
HSV	hsv(201, 62%, 24%)
CMYK	cmyk(62.3%, 21.3%, 0%, 76.1%)
CIE-LAB	lab(18.51, -5.13, -11.17)
CIE-LCH	lch(18.51, 12.29, 245.33°)
OKLab	oklab(29.53% -0.0235 -0.0311)
OKLCH	oklch(29.53% 0.039 232.9)
XYZ	xyz(2.2523, 2.6328, 4.8035)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17303D #3D2417

analogous

#173D37 #17303D #171D3D

triadic

#17303D #3D1730 #303D17

tetradic

#17303D #37173D #3D2417 #1D3D17

square

#17303D #37173D #3D2417 #1D3D17

split-complementary

#17303D #3D171D #3D3717

monochromatic

#081116 #081116 #17303D #285369 #397696

Accessibility & contrast

On white

13.76

#17303D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#17303D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17303D

13.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17303D	#FFFFFF	#000000	##FFFFFF
##17303D	1.00	13.76	1.53	13.76
#FFFFFF	13.76	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2F3E

Deuteranopia (green-blind)

#242B3D

Tritanopia (blue-blind)

#003434

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #17303d;
/* rgb */ color: rgb(23, 48, 61);
/* oklch */ color: oklch(29.5% 0.039 232.9);

Tailwind

colors: {
  custom: {
    50: '#586872',
    500: '#17303d',
    950: '#000000',
  },
}

SCSS

$custom: #17303d;
$custom-light: #586872;
$custom-dark: #000000;

JSON

{
  "hex": "#17303d",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 61
  },
  "hsl": {
    "h": 200.526,
    "s": 45.238,
    "l": 16.471
  },
  "oklch": {
    "l": 0.29533,
    "c": 0.03901,
    "h": 232.9
  },
  "luminance": 0.02633
}

Semantic roles & 50–950 ramp

primary

#17303D

secondary

#744F3C

accent

#7F53D5

background

#F5F6F6

surface

#E9EBEC

border

#C5C6C7

text

#030608

muted

#787A7B

Preview Lab

Preview with #17303D

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

Preview Lab → · Contrast checker → · Palette generator →