#18303A#18303A

#18303A is a dark, muted cyan. Relative luminance 0.026; OKLCH L 29.4% C 0.035 H 226.9°. Best body text is #FFFFFF at 13.79:1 contrast (WCAG AA passes).

Color values

HEX	#18303A
RGB	rgb(24, 48, 58)
HSL	hsl(198, 41%, 16%)
HSV	hsv(198, 59%, 23%)
CMYK	cmyk(58.6%, 17.2%, 0%, 77.3%)
CIE-LAB	lab(18.42, -5.95, -9.23)
CIE-LCH	lch(18.42, 10.98, 237.21°)
OKLab	oklab(29.43% -0.0239 -0.0256)
OKLCH	oklch(29.43% 0.035 226.9)
XYZ	xyz(2.1971, 2.6134, 4.3908)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18303A #3A2218

analogous

#183A33 #18303A #181F3A

triadic

#18303A #3A1830 #303A18

tetradic

#18303A #33183A #3A2218 #1F3A18

square

#18303A #33183A #3A2218 #1F3A18

split-complementary

#18303A #3A181F #3A3318

monochromatic

#091216 #091216 #18303A #2A5465 #3C7891

Accessibility & contrast

On white

13.79

#18303A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#18303A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18303A

13.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18303A	#FFFFFF	#000000	##FFFFFF
##18303A	1.00	13.79	1.52	13.79
#FFFFFF	13.79	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2F3B

Deuteranopia (green-blind)

#262B3A

Tritanopia (blue-blind)

#053333

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #18303a;
/* rgb */ color: rgb(24, 48, 58);
/* oklch */ color: oklch(29.4% 0.035 226.9);

Tailwind

colors: {
  custom: {
    50: '#586870',
    500: '#18303a',
    950: '#000000',
  },
}

SCSS

$custom: #18303a;
$custom-light: #586870;
$custom-dark: #000000;

JSON

{
  "hex": "#18303a",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 58
  },
  "hsl": {
    "h": 197.647,
    "s": 41.463,
    "l": 16.078
  },
  "oklch": {
    "l": 0.29434,
    "c": 0.03506,
    "h": 226.9
  },
  "luminance": 0.02614
}

Semantic roles & 50–950 ramp

primary

#18303A

secondary

#704D3E

accent

#7B57D1

background

#F5F6F6

surface

#E9EBEC

border

#C5C6C7

text

#030607

muted

#787A7A

Preview Lab

Preview with #18303A

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

Preview Lab → · Contrast checker → · Palette generator →