#18404A#18404A

#18404A is a dark, muted cyan. Relative luminance 0.044; OKLCH L 34.8% C 0.048 H 216.8°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#18404A
RGB	rgb(24, 64, 74)
HSL	hsl(192, 51%, 19%)
HSV	hsv(192, 68%, 29%)
CMYK	cmyk(67.6%, 13.5%, 0%, 71%)
CIE-LAB	lab(24.81, -10.43, -10.27)
CIE-LCH	lch(24.81, 14.64, 224.55°)
OKLab	oklab(34.77% -0.0381 -0.0285)
OKLCH	oklch(34.77% 0.048 216.8)
XYZ	xyz(3.4456, 4.3550, 7.1363)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18404A #4A2218

analogous

#184A3B #18404A #18274A

triadic

#18404A #4A1840 #404A18

tetradic

#18404A #3B184A #4A2218 #274A18

square

#18404A #3B184A #4A2218 #274A18

split-complementary

#18404A #4A1827 #4A3B18

monochromatic

#071417 #09181C #18404A #276878 #3690A6

Accessibility & contrast

On white

11.22

#18404A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#18404A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18404A

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18404A	#FFFFFF	#000000	##FFFFFF
##18404A	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393E4B

Deuteranopia (green-blind)

#32394A

Tritanopia (blue-blind)

#004443

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #18404a;
/* rgb */ color: rgb(24, 64, 74);
/* oklch */ color: oklch(34.8% 0.048 216.8);

Tailwind

colors: {
  custom: {
    50: '#5b757c',
    500: '#18404a',
    950: '#000000',
  },
}

SCSS

$custom: #18404a;
$custom-light: #5b757c;
$custom-dark: #000000;

JSON

{
  "hex": "#18404a",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 74
  },
  "hsl": {
    "h": 192,
    "s": 51.02,
    "l": 19.216
  },
  "oklch": {
    "l": 0.3477,
    "c": 0.0476,
    "h": 216.8
  },
  "luminance": 0.04355
}

Semantic roles & 50–950 ramp

primary

#18404A

secondary

#814B3D

accent

#6A4DDA

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #18404A

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

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