#18637E#18637E

#18637E is a mid, moderate cyan. Relative luminance 0.106; OKLCH L 46.8% C 0.082 H 227.4°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#18637E
RGB	rgb(24, 99, 126)
HSL	hsl(196, 68%, 29%)
HSV	hsv(196, 81%, 49%)
CMYK	cmyk(81%, 21.4%, 0%, 50.6%)
CIE-LAB	lab(38.94, -12.31, -21.44)
CIE-LCH	lch(38.94, 24.72, 240.14°)
OKLab	oklab(46.84% -0.0554 -0.0602)
OKLCH	oklch(46.84% 0.082 227.4)
XYZ	xyz(8.6029, 10.6232, 21.3317)
Luminance	0.1062 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18637E #7E3318

analogous

#187E66 #18637E #18307E

triadic

#18637E #7E1863 #637E18

tetradic

#18637E #66187E #7E3318 #307E18

square

#18637E #66187E #7E3318 #307E18

split-complementary

#18637E #7E1830 #7E6618

monochromatic

#05141A #0E3B4B #18637E #228BB1 #37AED9

Accessibility & contrast

On white

6.72

#18637E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#18637E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #18637E

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18637E	#FFFFFF	#000000	##FFFFFF
##18637E	1.00	6.72	3.12	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55617F

Deuteranopia (green-blind)

#47577E

Tritanopia (blue-blind)

#006B6C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #18637e;
/* rgb */ color: rgb(24, 99, 126);
/* oklch */ color: oklch(46.8% 0.082 227.4);

Tailwind

colors: {
  custom: {
    50: '#678fa3',
    500: '#18637e',
    950: '#000000',
  },
}

SCSS

$custom: #18637e;
$custom-light: #678fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#18637e",
  "rgb": {
    "r": 24,
    "g": 99,
    "b": 126
  },
  "hsl": {
    "h": 195.882,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.46839,
    "c": 0.08186,
    "h": 227.4
  },
  "luminance": 0.10624
}

Semantic roles & 50–950 ramp

primary

#18637E

secondary

#B25E3F

accent

#6B3DEB

background

#F6F8FA

surface

#EBF0F3

border

#C6CBCD

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #18637E

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

Preview Lab → · Contrast checker → · Palette generator →