#18557E#18557E

#18557E is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.2% C 0.091 H 243.0°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#18557E
RGB	rgb(24, 85, 126)
HSL	hsl(204, 68%, 29%)
HSV	hsv(204, 81%, 49%)
CMYK	cmyk(81%, 32.5%, 0%, 50.6%)
CIE-LAB	lab(34.39, -3.79, -28.54)
CIE-LCH	lch(34.39, 28.79, 262.43°)
OKLab	oklab(43.22% -0.0412 -0.0809)
OKLCH	oklch(43.22% 0.091 243)
XYZ	xyz(7.3896, 8.1967, 20.9273)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18557E #7E4118

analogous

#187E74 #18557E #18227E

triadic

#18557E #7E1855 #557E18

tetradic

#18557E #74187E #7E4118 #227E18

square

#18557E #74187E #7E4118 #227E18

split-complementary

#18557E #7E1822 #7E7418

monochromatic

#05111A #0E324B #18557E #2278B1 #3798D9

Accessibility & contrast

On white

7.96

#18557E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#18557E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18557E

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18557E	#FFFFFF	#000000	##FFFFFF
##18557E	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#425680

Deuteranopia (green-blind)

#344D7D

Tritanopia (blue-blind)

#005F64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #18557e;
/* rgb */ color: rgb(24, 85, 126);
/* oklch */ color: oklch(43.2% 0.091 243.0);

Tailwind

colors: {
  custom: {
    50: '#6684a3',
    500: '#18557e',
    950: '#000000',
  },
}

SCSS

$custom: #18557e;
$custom-light: #6684a3;
$custom-dark: #000000;

JSON

{
  "hex": "#18557e",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 126
  },
  "hsl": {
    "h": 204.118,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.43218,
    "c": 0.09085,
    "h": 243
  },
  "luminance": 0.08198
}

Semantic roles & 50–950 ramp

primary

#18557E

secondary

#B26E3F

accent

#833DEB

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #18557E

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

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