#18374A#18374A

#18374A is a dark, muted cyan. Relative luminance 0.034; OKLCH L 32.3% C 0.050 H 238.0°. Best body text is #FFFFFF at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#18374A
RGB	rgb(24, 55, 74)
HSL	hsl(203, 51%, 19%)
HSV	hsv(203, 68%, 29%)
CMYK	cmyk(67.6%, 25.7%, 0%, 71%)
CIE-LAB	lab(21.66, -4.67, -15.12)
CIE-LCH	lch(21.66, 15.83, 252.82°)
OKLab	oklab(32.25% -0.0265 -0.0424)
OKLCH	oklch(32.25% 0.05 238)
XYZ	xyz(2.9784, 3.4207, 6.9805)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18374A #4A2B18

analogous

#184A44 #18374A #181E4A

triadic

#18374A #4A1837 #374A18

tetradic

#18374A #44184A #4A2B18 #1E4A18

square

#18374A #44184A #4A2B18 #1E4A18

split-complementary

#18374A #4A181E #4A4418

monochromatic

#071117 #09151C #18374A #275978 #367CA6

Accessibility & contrast

On white

12.47

#18374A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#18374A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18374A

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18374A	#FFFFFF	#000000	##FFFFFF
##18374A	1.00	12.47	1.68	12.47
#FFFFFF	12.47	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E374B

Deuteranopia (green-blind)

#27324A

Tritanopia (blue-blind)

#003C3D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #18374a;
/* rgb */ color: rgb(24, 55, 74);
/* oklch */ color: oklch(32.3% 0.050 238.0);

Tailwind

colors: {
  custom: {
    50: '#5b6d7c',
    500: '#18374a',
    950: '#000000',
  },
}

SCSS

$custom: #18374a;
$custom-light: #5b6d7c;
$custom-dark: #000000;

JSON

{
  "hex": "#18374a",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 74
  },
  "hsl": {
    "h": 202.8,
    "s": 51.02,
    "l": 19.216
  },
  "oklch": {
    "l": 0.32252,
    "c": 0.05,
    "h": 238
  },
  "luminance": 0.03421
}

Semantic roles & 50–950 ramp

primary

#18374A

secondary

#81573D

accent

#834DDA

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #18374A

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

Preview Lab → · Contrast checker → · Palette generator →