#18588F#18588F

#18588F is a mid, moderate cyan. Relative luminance 0.092; OKLCH L 45.0% C 0.110 H 249.2°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#18588F
RGB	rgb(24, 88, 143)
HSL	hsl(208, 71%, 33%)
HSV	hsv(208, 83%, 56%)
CMYK	cmyk(83.2%, 38.5%, 0%, 43.9%)
CIE-LAB	lab(36.28, 1.03, -35.95)
CIE-LCH	lch(36.28, 35.96, 271.65°)
OKLab	oklab(45.02% -0.039 -0.1026)
OKLCH	oklch(45.02% 0.11 249.2)
XYZ	xyz(8.8224, 9.1557, 27.2835)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18588F #8F4F18

analogous

#188F8A #18588F #181D8F

triadic

#18588F #8F1858 #588F18

tetradic

#18588F #8A188F #8F4F18 #1D8F18

square

#18588F #8A188F #8F4F18 #1D8F18

split-complementary

#18588F #8F181D #8F8A18

monochromatic

#061826 #0F385B #18588F #2178C3 #4297DF

Accessibility & contrast

On white

7.42

#18588F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#18588F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18588F

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18588F	#FFFFFF	#000000	##FFFFFF
##18588F	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5B91

Deuteranopia (green-blind)

#2C508E

Tritanopia (blue-blind)

#00656C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #18588f;
/* rgb */ color: rgb(24, 88, 143);
/* oklch */ color: oklch(45.0% 0.110 249.2);

Tailwind

colors: {
  custom: {
    50: '#6a86b0',
    500: '#18588f',
    950: '#000000',
  },
}

SCSS

$custom: #18588f;
$custom-light: #6a86b0;
$custom-dark: #000000;

JSON

{
  "hex": "#18588f",
  "rgb": {
    "r": 24,
    "g": 88,
    "b": 143
  },
  "hsl": {
    "h": 207.731,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.45017,
    "c": 0.10971,
    "h": 249.2
  },
  "luminance": 0.09157
}

Semantic roles & 50–950 ramp

primary

#18588F

secondary

#C07D43

accent

#8D3AEE

background

#F6F8FA

surface

#ECEFF5

border

#C7CACF

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #18588F

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

Preview Lab → · Contrast checker → · Palette generator →