#18637F#18637F

#18637F is a mid, moderate cyan. Relative luminance 0.106; OKLCH L 46.9% C 0.083 H 228.3°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#18637F
RGB	rgb(24, 99, 127)
HSL	hsl(196, 68%, 30%)
HSV	hsv(196, 81%, 50%)
CMYK	cmyk(81.1%, 22%, 0%, 50.2%)
CIE-LAB	lab(38.98, -11.94, -21.98)
CIE-LCH	lch(38.98, 25.01, 241.49°)
OKLab	oklab(46.89% -0.055 -0.0618)
OKLCH	oklch(46.89% 0.083 228.3)
XYZ	xyz(8.6677, 10.6491, 21.6732)
Luminance	0.1065 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18637F #7F3418

analogous

#187F68 #18637F #182F7F

triadic

#18637F #7F1863 #637F18

tetradic

#18637F #68187F #7F3418 #2F7F18

square

#18637F #68187F #7F3418 #2F7F18

split-complementary

#18637F #7F182F #7F6818

monochromatic

#05141A #0E3B4C #18637F #228BB2 #38AED9

Accessibility & contrast

On white

6.71

#18637F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#18637F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #18637F

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18637F	#FFFFFF	#000000	##FFFFFF
##18637F	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#546180

Deuteranopia (green-blind)

#47587F

Tritanopia (blue-blind)

#006B6C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #18637f;
/* rgb */ color: rgb(24, 99, 127);
/* oklch */ color: oklch(46.9% 0.083 228.3);

Tailwind

colors: {
  custom: {
    50: '#678fa4',
    500: '#18637f',
    950: '#000000',
  },
}

SCSS

$custom: #18637f;
$custom-light: #678fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#18637f",
  "rgb": {
    "r": 24,
    "g": 99,
    "b": 127
  },
  "hsl": {
    "h": 196.311,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.46889,
    "c": 0.08274,
    "h": 228.3
  },
  "luminance": 0.1065
}

Semantic roles & 50–950 ramp

primary

#18637F

secondary

#B35F3F

accent

#6C3DEB

background

#F6F8FA

surface

#EBF0F4

border

#C6CBCE

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #18637F

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

Preview Lab → · Contrast checker → · Palette generator →