#18588D#18588D

#18588D is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.9% C 0.107 H 248.3°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#18588D
RGB	rgb(24, 88, 141)
HSL	hsl(207, 71%, 32%)
HSV	hsv(207, 83%, 55%)
CMYK	cmyk(83%, 37.6%, 0%, 44.7%)
CIE-LAB	lab(36.17, 0.23, -34.91)
CIE-LCH	lch(36.17, 34.91, 270.39°)
OKLab	oklab(44.89% -0.0395 -0.0995)
OKLCH	oklch(44.89% 0.107 248.3)
XYZ	xyz(8.6723, 9.0957, 26.4927)
Luminance	0.0910 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18588D #8D4D18

analogous

#188D87 #18588D #181E8D

triadic

#18588D #8D1858 #588D18

tetradic

#18588D #87188D #8D4D18 #1E8D18

square

#18588D #87188D #8D4D18 #1E8D18

split-complementary

#18588D #8D181E #8D8718

monochromatic

#061724 #0F3759 #18588D #2179C1 #4197DF

Accessibility & contrast

On white

7.45

#18588D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#18588D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18588D

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18588D	#FFFFFF	#000000	##FFFFFF
##18588D	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5B8F

Deuteranopia (green-blind)

#2D508C

Tritanopia (blue-blind)

#00656B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #18588d;
/* rgb */ color: rgb(24, 88, 141);
/* oklch */ color: oklch(44.9% 0.107 248.3);

Tailwind

colors: {
  custom: {
    50: '#6986ae',
    500: '#18588d',
    950: '#000000',
  },
}

SCSS

$custom: #18588d;
$custom-light: #6986ae;
$custom-dark: #000000;

JSON

{
  "hex": "#18588d",
  "rgb": {
    "r": 24,
    "g": 88,
    "b": 141
  },
  "hsl": {
    "h": 207.179,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.44889,
    "c": 0.10709,
    "h": 248.3
  },
  "luminance": 0.09097
}

Semantic roles & 50–950 ramp

primary

#18588D

secondary

#BF7A42

accent

#8B3AEE

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #18588D

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

Preview Lab → · Contrast checker → · Palette generator →