#18638F#18638F

#18638F is a mid, moderate cyan. Relative luminance 0.111; OKLCH L 47.8% C 0.099 H 240.3°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#18638F
RGB	rgb(24, 99, 143)
HSL	hsl(202, 71%, 33%)
HSV	hsv(202, 83%, 56%)
CMYK	cmyk(83.2%, 30.8%, 0%, 43.9%)
CIE-LAB	lab(39.75, -5.88, -30.47)
CIE-LCH	lch(39.75, 31.03, 259.08°)
OKLab	oklab(47.75% -0.0492 -0.0864)
OKLCH	oklch(47.75% 0.099 240.3)
XYZ	xyz(9.7945, 11.0998, 27.6075)
Luminance	0.1110 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18638F #8F4418

analogous

#188F7F #18638F #18278F

triadic

#18638F #8F1863 #638F18

tetradic

#18638F #7F188F #8F4418 #278F18

square

#18638F #7F188F #8F4418 #278F18

split-complementary

#18638F #8F1827 #8F7F18

monochromatic

#061A26 #0F3F5B #18638F #2187C3 #42A5DF

Accessibility & contrast

On white

6.52

#18638F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#18638F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #18638F

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18638F	#FFFFFF	#000000	##FFFFFF
##18638F	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E6491

Deuteranopia (green-blind)

#3E598E

Tritanopia (blue-blind)

#006E72

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #18638f;
/* rgb */ color: rgb(24, 99, 143);
/* oklch */ color: oklch(47.8% 0.099 240.3);

Tailwind

colors: {
  custom: {
    50: '#6a8fb0',
    500: '#18638f',
    950: '#000000',
  },
}

SCSS

$custom: #18638f;
$custom-light: #6a8fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#18638f",
  "rgb": {
    "r": 24,
    "g": 99,
    "b": 143
  },
  "hsl": {
    "h": 202.185,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.4775,
    "c": 0.0994,
    "h": 240.3
  },
  "luminance": 0.11101
}

Semantic roles & 50–950 ramp

primary

#18638F

secondary

#C07143

accent

#7C3AEE

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #18638F

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

Preview Lab → · Contrast checker → · Palette generator →