#187E99#187E99

#187E99 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.1% C 0.095 H 221.2°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#187E99
RGB	rgb(24, 126, 153)
HSL	hsl(193, 73%, 35%)
HSV	hsv(193, 84%, 60%)
CMYK	cmyk(84.3%, 17.6%, 0%, 40%)
CIE-LAB	lab(48.78, -17.79, -22.35)
CIE-LCH	lch(48.78, 28.57, 231.48°)
OKLab	oklab(55.11% -0.0716 -0.0627)
OKLCH	oklch(55.11% 0.095 221.2)
XYZ	xyz(13.5849, 17.4141, 32.7761)
Luminance	0.1742 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#187E99 #993318

analogous

#189973 #187E99 #183E99

triadic

#187E99 #99187E #7E9918

tetradic

#187E99 #731899 #993318 #3E9918

square

#187E99 #731899 #993318 #3E9918

split-complementary

#187E99 #99183E #997318

monochromatic

#07272F #105264 #187E99 #20AACE #49C2E2

Accessibility & contrast

On white

4.68

#187E99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#187E99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #187E99

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##187E99	#FFFFFF	#000000	##FFFFFF
##187E99	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7B9A

Deuteranopia (green-blind)

#5D6F99

Tritanopia (blue-blind)

#008787

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #187e99;
/* rgb */ color: rgb(24, 126, 153);
/* oklch */ color: oklch(55.1% 0.095 221.2);

Tailwind

colors: {
  custom: {
    50: '#6ea3b7',
    500: '#187e99',
    950: '#000000',
  },
}

SCSS

$custom: #187e99;
$custom-light: #6ea3b7;
$custom-dark: #000000;

JSON

{
  "hex": "#187e99",
  "rgb": {
    "r": 24,
    "g": 126,
    "b": 153
  },
  "hsl": {
    "h": 192.558,
    "s": 72.881,
    "l": 34.706
  },
  "oklch": {
    "l": 0.55114,
    "c": 0.09516,
    "h": 221.2
  },
  "luminance": 0.17416
}

Semantic roles & 50–950 ramp

primary

#187E99

secondary

#C46349

accent

#5F38F0

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#080F11

muted

#7B7F80

Preview Lab

Preview with #187E99

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

Preview Lab → · Contrast checker → · Palette generator →