#18566E#18566E

#18566E is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.6% C 0.073 H 228.4°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#18566E
RGB	rgb(24, 86, 110)
HSL	hsl(197, 64%, 26%)
HSV	hsv(197, 78%, 43%)
CMYK	cmyk(78.2%, 21.8%, 0%, 56.9%)
CIE-LAB	lab(33.93, -10.56, -19.33)
CIE-LCH	lch(33.93, 22.03, 241.35°)
OKLab	oklab(42.6% -0.0482 -0.0543)
OKLCH	oklch(42.6% 0.073 228.4)
XYZ	xyz(6.5178, 7.9748, 15.9446)
Luminance	0.0798 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18566E #6E3018

analogous

#186E5B #18566E #182B6E

triadic

#18566E #6E1856 #566E18

tetradic

#18566E #5B186E #6E3018 #2B6E18

square

#18566E #5B186E #6E3018 #2B6E18

split-complementary

#18566E #6E182B #6E5B18

monochromatic

#051419 #0D2F3C #18566E #237DA0 #2FA4D2

Accessibility & contrast

On white

8.09

#18566E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#18566E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18566E

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18566E	#FFFFFF	#000000	##FFFFFF
##18566E	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49546F

Deuteranopia (green-blind)

#3E4C6E

Tritanopia (blue-blind)

#005D5E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #18566e;
/* rgb */ color: rgb(24, 86, 110);
/* oklch */ color: oklch(42.6% 0.073 228.4);

Tailwind

colors: {
  custom: {
    50: '#638597',
    500: '#18566e',
    950: '#000000',
  },
}

SCSS

$custom: #18566e;
$custom-light: #638597;
$custom-dark: #000000;

JSON

{
  "hex": "#18566e",
  "rgb": {
    "r": 24,
    "g": 86,
    "b": 110
  },
  "hsl": {
    "h": 196.744,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.42595,
    "c": 0.07256,
    "h": 228.4
  },
  "luminance": 0.07976
}

Semantic roles & 50–950 ramp

primary

#18566E

secondary

#A45A3E

accent

#6F41E7

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #18566E

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

Preview Lab → · Contrast checker → · Palette generator →