#18566F#18566F

#18566F is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.6% C 0.073 H 229.5°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#18566F
RGB	rgb(24, 86, 111)
HSL	hsl(197, 64%, 26%)
HSV	hsv(197, 78%, 44%)
CMYK	cmyk(78.4%, 22.5%, 0%, 56.5%)
CIE-LAB	lab(33.98, -10.19, -19.88)
CIE-LCH	lch(33.98, 22.34, 242.88°)
OKLab	oklab(42.65% -0.0478 -0.0558)
OKLCH	oklch(42.65% 0.073 229.5)
XYZ	xyz(6.5726, 7.9967, 16.2330)
Luminance	0.0800 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18566F #6F3118

analogous

#186F5D #18566F #182B6F

triadic

#18566F #6F1856 #566F18

tetradic

#18566F #5D186F #6F3118 #2B6F18

square

#18566F #5D186F #6F3118 #2B6F18

split-complementary

#18566F #6F182B #6F5D18

monochromatic

#051319 #0D2F3D #18566F #237DA1 #2FA3D2

Accessibility & contrast

On white

8.08

#18566F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#18566F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18566F

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18566F	#FFFFFF	#000000	##FFFFFF
##18566F	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495570

Deuteranopia (green-blind)

#3D4C6F

Tritanopia (blue-blind)

#005D5E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #18566f;
/* rgb */ color: rgb(24, 86, 111);
/* oklch */ color: oklch(42.6% 0.073 229.5);

Tailwind

colors: {
  custom: {
    50: '#638598',
    500: '#18566f',
    950: '#000000',
  },
}

SCSS

$custom: #18566f;
$custom-light: #638598;
$custom-dark: #000000;

JSON

{
  "hex": "#18566f",
  "rgb": {
    "r": 24,
    "g": 86,
    "b": 111
  },
  "hsl": {
    "h": 197.241,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.42646,
    "c": 0.07349,
    "h": 229.5
  },
  "luminance": 0.07997
}

Semantic roles & 50–950 ramp

primary

#18566F

secondary

#A55C3E

accent

#7040E7

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #18566F

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

Preview Lab → · Contrast checker → · Palette generator →