#187D99#187D99

#187D99 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 54.9% C 0.095 H 222.2°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#187D99
RGB	rgb(24, 125, 153)
HSL	hsl(193, 73%, 35%)
HSV	hsv(193, 84%, 60%)
CMYK	cmyk(84.3%, 18.3%, 0%, 40%)
CIE-LAB	lab(48.46, -17.24, -22.84)
CIE-LCH	lch(48.46, 28.62, 232.95°)
OKLab	oklab(54.86% -0.0706 -0.0641)
OKLCH	oklch(54.86% 0.095 222.2)
XYZ	xyz(13.4576, 17.1596, 32.7337)
Luminance	0.1716 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#187D99 #993418

analogous

#189974 #187D99 #183D99

triadic

#187D99 #99187D #7D9918

tetradic

#187D99 #741899 #993418 #3D9918

square

#187D99 #741899 #993418 #3D9918

split-complementary

#187D99 #99183D #997418

monochromatic

#07272F #105264 #187D99 #20A8CE #49C1E2

Accessibility & contrast

On white

4.74

#187D99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#187D99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #187D99

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##187D99	#FFFFFF	#000000	##FFFFFF
##187D99	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7A9A

Deuteranopia (green-blind)

#5C6E99

Tritanopia (blue-blind)

#008686

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #187d99;
/* rgb */ color: rgb(24, 125, 153);
/* oklch */ color: oklch(54.9% 0.095 222.2);

Tailwind

colors: {
  custom: {
    50: '#6ea2b7',
    500: '#187d99',
    950: '#000000',
  },
}

SCSS

$custom: #187d99;
$custom-light: #6ea2b7;
$custom-dark: #000000;

JSON

{
  "hex": "#187d99",
  "rgb": {
    "r": 24,
    "g": 125,
    "b": 153
  },
  "hsl": {
    "h": 193.023,
    "s": 72.881,
    "l": 34.706
  },
  "oklch": {
    "l": 0.54859,
    "c": 0.09536,
    "h": 222.2
  },
  "luminance": 0.17161
}

Semantic roles & 50–950 ramp

primary

#187D99

secondary

#C46449

accent

#6038F0

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#080F11

muted

#7B7F80

Preview Lab

Preview with #187D99

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

Preview Lab → · Contrast checker → · Palette generator →