#18588E#18588E

#18588E is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 45.0% C 0.108 H 248.8°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#18588E
RGB	rgb(24, 88, 142)
HSL	hsl(207, 71%, 33%)
HSV	hsv(207, 83%, 56%)
CMYK	cmyk(83.1%, 38%, 0%, 44.3%)
CIE-LAB	lab(36.23, 0.63, -35.43)
CIE-LCH	lch(36.23, 35.44, 271.02°)
OKLab	oklab(44.95% -0.0392 -0.101)
OKLCH	oklch(44.95% 0.108 248.8)
XYZ	xyz(8.7470, 9.1256, 26.8863)
Luminance	0.0913 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18588E #8E4E18

analogous

#188E89 #18588E #181D8E

triadic

#18588E #8E1858 #588E18

tetradic

#18588E #89188E #8E4E18 #1D8E18

square

#18588E #89188E #8E4E18 #1D8E18

split-complementary

#18588E #8E181D #8E8918

monochromatic

#061725 #0F385A #18588E #2178C2 #4197DF

Accessibility & contrast

On white

7.43

#18588E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#18588E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18588E

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18588E	#FFFFFF	#000000	##FFFFFF
##18588E	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5B90

Deuteranopia (green-blind)

#2C508D

Tritanopia (blue-blind)

#00656C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #18588e;
/* rgb */ color: rgb(24, 88, 142);
/* oklch */ color: oklch(45.0% 0.108 248.8);

Tailwind

colors: {
  custom: {
    50: '#6a86af',
    500: '#18588e',
    950: '#000000',
  },
}

SCSS

$custom: #18588e;
$custom-light: #6a86af;
$custom-dark: #000000;

JSON

{
  "hex": "#18588e",
  "rgb": {
    "r": 24,
    "g": 88,
    "b": 142
  },
  "hsl": {
    "h": 207.458,
    "s": 71.084,
    "l": 32.549
  },
  "oklch": {
    "l": 0.44953,
    "c": 0.1084,
    "h": 248.8
  },
  "luminance": 0.09127
}

Semantic roles & 50–950 ramp

primary

#18588E

secondary

#C07C42

accent

#8C3AEE

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #18588E

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

Preview Lab → · Contrast checker → · Palette generator →