#18283C#18283C

#18283C is a dark, muted cyan. Relative luminance 0.020; OKLCH L 27.3% C 0.043 H 254.6°. Best body text is #FFFFFF at 14.92:1 contrast (WCAG AA passes).

Color values

HEX	#18283C
RGB	rgb(24, 40, 60)
HSL	hsl(213, 43%, 16%)
HSV	hsv(213, 60%, 24%)
CMYK	cmyk(60%, 33.3%, 0%, 76.5%)
CIE-LAB	lab(15.68, 0.32, -14.85)
CIE-LCH	lch(15.68, 14.85, 271.25°)
OKLab	oklab(27.3% -0.0115 -0.0417)
OKLCH	oklch(27.3% 0.043 254.6)
XYZ	xyz(1.9508, 2.0379, 4.5646)
Luminance	0.0204 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18283C #3C2C18

analogous

#183A3C #18283C #1A183C

triadic

#18283C #3C1828 #283C18

tetradic

#18283C #3C183A #3C2C18 #183C1A

square

#18283C #3C183A #3C2C18 #183C1A

split-complementary

#18283C #3C1A18 #3A3C18

monochromatic

#090F16 #090F16 #18283C #294568 #3B6293

Accessibility & contrast

On white

14.92

#18283C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#18283C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18283C

14.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18283C	#FFFFFF	#000000	##FFFFFF
##18283C	1.00	14.92	1.41	14.92
#FFFFFF	14.92	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20293D

Deuteranopia (green-blind)

#1C263C

Tritanopia (blue-blind)

#062C2F

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #18283c;
/* rgb */ color: rgb(24, 40, 60);
/* oklch */ color: oklch(27.3% 0.043 254.6);

Tailwind

colors: {
  custom: {
    50: '#586171',
    500: '#18283c',
    950: '#000000',
  },
}

SCSS

$custom: #18283c;
$custom-light: #586171;
$custom-dark: #000000;

JSON

{
  "hex": "#18283c",
  "rgb": {
    "r": 24,
    "g": 40,
    "b": 60
  },
  "hsl": {
    "h": 213.333,
    "s": 42.857,
    "l": 16.471
  },
  "oklch": {
    "l": 0.27303,
    "c": 0.04324,
    "h": 254.6
  },
  "luminance": 0.02038
}

Semantic roles & 50–950 ramp

primary

#18283C

secondary

#725B3E

accent

#9B55D3

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030507

muted

#78797A

Preview Lab

Preview with #18283C

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

Preview Lab → · Contrast checker → · Palette generator →