#18637C#18637C

#18637C is a mid, moderate cyan. Relative luminance 0.106; OKLCH L 46.7% C 0.080 H 225.4°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#18637C
RGB	rgb(24, 99, 124)
HSL	hsl(195, 68%, 29%)
HSV	hsv(195, 81%, 49%)
CMYK	cmyk(80.6%, 20.2%, 0%, 51.4%)
CIE-LAB	lab(38.85, -13.05, -20.35)
CIE-LCH	lch(38.85, 24.18, 237.34°)
OKLab	oklab(46.74% -0.0562 -0.0571)
OKLCH	oklch(46.74% 0.08 225.4)
XYZ	xyz(8.4751, 10.5721, 20.6588)
Luminance	0.1057 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18637C #7C3118

analogous

#187C63 #18637C #18317C

triadic

#18637C #7C1863 #637C18

tetradic

#18637C #63187C #7C3118 #317C18

square

#18637C #63187C #7C3118 #317C18

split-complementary

#18637C #7C1831 #7C6318

monochromatic

#05141A #0E3A49 #18637C #228CAF #36B0D8

Accessibility & contrast

On white

6.74

#18637C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#18637C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #18637C

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18637C	#FFFFFF	#000000	##FFFFFF
##18637C	1.00	6.74	3.11	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55617D

Deuteranopia (green-blind)

#48577C

Tritanopia (blue-blind)

#006A6B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #18637c;
/* rgb */ color: rgb(24, 99, 124);
/* oklch */ color: oklch(46.7% 0.080 225.4);

Tailwind

colors: {
  custom: {
    50: '#678fa2',
    500: '#18637c',
    950: '#000000',
  },
}

SCSS

$custom: #18637c;
$custom-light: #678fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#18637c",
  "rgb": {
    "r": 24,
    "g": 99,
    "b": 124
  },
  "hsl": {
    "h": 195,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.46739,
    "c": 0.08016,
    "h": 225.4
  },
  "luminance": 0.10573
}

Semantic roles & 50–950 ramp

primary

#18637C

secondary

#B15C3F

accent

#693DEA

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070C0F

muted

#7A7D7E

Preview Lab

Preview with #18637C

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

Preview Lab → · Contrast checker → · Palette generator →