#18637D#18637D

#18637D is a mid, moderate cyan. Relative luminance 0.106; OKLCH L 46.8% C 0.081 H 226.4°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#18637D
RGB	rgb(24, 99, 125)
HSL	hsl(195, 68%, 29%)
HSV	hsv(195, 81%, 49%)
CMYK	cmyk(80.8%, 20.8%, 0%, 51%)
CIE-LAB	lab(38.89, -12.68, -20.90)
CIE-LCH	lch(38.89, 24.44, 238.75°)
OKLab	oklab(46.79% -0.0558 -0.0587)
OKLCH	oklch(46.79% 0.081 226.4)
XYZ	xyz(8.5387, 10.5975, 20.9936)
Luminance	0.1060 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18637D #7D3218

analogous

#187D65 #18637D #18307D

triadic

#18637D #7D1863 #637D18

tetradic

#18637D #65187D #7D3218 #307D18

square

#18637D #65187D #7D3218 #307D18

split-complementary

#18637D #7D1830 #7D6518

monochromatic

#05141A #0E3A4A #18637D #228CB0 #37AFD9

Accessibility & contrast

On white

6.73

#18637D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#18637D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #18637D

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18637D	#FFFFFF	#000000	##FFFFFF
##18637D	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55617E

Deuteranopia (green-blind)

#48577D

Tritanopia (blue-blind)

#006B6C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #18637d;
/* rgb */ color: rgb(24, 99, 125);
/* oklch */ color: oklch(46.8% 0.081 226.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#18637d",
  "rgb": {
    "r": 24,
    "g": 99,
    "b": 125
  },
  "hsl": {
    "h": 195.446,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.46789,
    "c": 0.081,
    "h": 226.4
  },
  "luminance": 0.10599
}

Semantic roles & 50–950 ramp

primary

#18637D

secondary

#B25D3F

accent

#6A3DEB

background

#F6F8FA

surface

#EBF0F3

border

#C6CBCD

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #18637D

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

Preview Lab → · Contrast checker → · Palette generator →