#18566B#18566B

#18566B is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.4% C 0.070 H 225.0°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#18566B
RGB	rgb(24, 86, 107)
HSL	hsl(195, 63%, 26%)
HSV	hsv(195, 78%, 42%)
CMYK	cmyk(77.6%, 19.6%, 0%, 58%)
CIE-LAB	lab(33.80, -11.68, -17.66)
CIE-LCH	lch(33.80, 21.18, 236.53°)
OKLab	oklab(42.44% -0.0494 -0.0495)
OKLCH	oklch(42.44% 0.07 225)
XYZ	xyz(6.3572, 7.9106, 15.0989)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18566B #6B2D18

analogous

#186B56 #18566B #182C6B

triadic

#18566B #6B1856 #566B18

tetradic

#18566B #56186B #6B2D18 #2C6B18

square

#18566B #56186B #6B2D18 #2C6B18

split-complementary

#18566B #6B182C #6B5618

monochromatic

#061419 #0D2E39 #18566B #237E9D #2EA6CF

Accessibility & contrast

On white

8.13

#18566B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#18566B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18566B

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18566B	#FFFFFF	#000000	##FFFFFF
##18566B	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A546C

Deuteranopia (green-blind)

#3F4C6B

Tritanopia (blue-blind)

#005C5D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #18566b;
/* rgb */ color: rgb(24, 86, 107);
/* oklch */ color: oklch(42.4% 0.070 225.0);

Tailwind

colors: {
  custom: {
    50: '#628595',
    500: '#18566b',
    950: '#000000',
  },
}

SCSS

$custom: #18566b;
$custom-light: #628595;
$custom-dark: #000000;

JSON

{
  "hex": "#18566b",
  "rgb": {
    "r": 24,
    "g": 86,
    "b": 107
  },
  "hsl": {
    "h": 195.181,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.42443,
    "c": 0.06993,
    "h": 225
  },
  "luminance": 0.07911
}

Semantic roles & 50–950 ramp

primary

#18566B

secondary

#A1573E

accent

#6B41E6

background

#F6F8F9

surface

#EBEFF1

border

#C6CACB

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #18566B

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

Preview Lab → · Contrast checker → · Palette generator →