#18558C#18558C

#18558C is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 44.1% C 0.109 H 250.1°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#18558C
RGB	rgb(24, 85, 140)
HSL	hsl(208, 71%, 32%)
HSV	hsv(208, 83%, 55%)
CMYK	cmyk(82.9%, 39.3%, 0%, 45.1%)
CIE-LAB	lab(35.17, 1.77, -35.89)
CIE-LCH	lch(35.17, 35.94, 272.83°)
OKLab	oklab(44.09% -0.0371 -0.1024)
OKLCH	oklch(44.09% 0.109 250.1)
XYZ	xyz(8.3570, 8.5836, 26.0222)
Luminance	0.0858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18558C #8C4F18

analogous

#188C89 #18558C #181B8C

triadic

#18558C #8C1855 #558C18

tetradic

#18558C #89188C #8C4F18 #1B8C18

square

#18558C #89188C #8C4F18 #1B8C18

split-complementary

#18558C #8C181B #8C8918

monochromatic

#061624 #0F3558 #18558C #2175C0 #4093DE

Accessibility & contrast

On white

7.73

#18558C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#18558C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18558C

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18558C	#FFFFFF	#000000	##FFFFFF
##18558C	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B588E

Deuteranopia (green-blind)

#294E8B

Tritanopia (blue-blind)

#006269

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #18558c;
/* rgb */ color: rgb(24, 85, 140);
/* oklch */ color: oklch(44.1% 0.109 250.1);

Tailwind

colors: {
  custom: {
    50: '#6984ae',
    500: '#18558c',
    950: '#000000',
  },
}

SCSS

$custom: #18558c;
$custom-light: #6984ae;
$custom-dark: #000000;

JSON

{
  "hex": "#18558c",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 140
  },
  "hsl": {
    "h": 208.448,
    "s": 70.732,
    "l": 32.157
  },
  "oklch": {
    "l": 0.44088,
    "c": 0.10895,
    "h": 250.1
  },
  "luminance": 0.08585
}

Semantic roles & 50–950 ramp

primary

#18558C

secondary

#BF7D41

accent

#8F3AED

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #18558C

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

Preview Lab → · Contrast checker → · Palette generator →