#187B8F#187B8F

#187B8F is a mid, moderate cyan. Relative luminance 0.163; OKLCH L 53.9% C 0.089 H 215.5°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#187B8F
RGB	rgb(24, 123, 143)
HSL	hsl(190, 71%, 33%)
HSV	hsv(190, 83%, 56%)
CMYK	cmyk(83.2%, 14%, 0%, 43.9%)
CIE-LAB	lab(47.42, -19.67, -18.56)
CIE-LCH	lch(47.42, 27.04, 223.35°)
OKLab	oklab(53.89% -0.0728 -0.0519)
OKLCH	oklch(53.89% 0.089 215.5)
XYZ	xyz(12.4154, 16.3417, 28.4812)
Luminance	0.1634 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#187B8F #8F2C18

analogous

#188F67 #187B8F #18408F

triadic

#187B8F #8F187B #7B8F18

tetradic

#187B8F #67188F #8F2C18 #408F18

square

#187B8F #67188F #8F2C18 #408F18

split-complementary

#187B8F #8F1840 #8F6718

monochromatic

#062126 #0F4E5B #187B8F #21A8C3 #42C5DF

Accessibility & contrast

On white

4.92

#187B8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#187B8F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #187B8F

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##187B8F	#FFFFFF	#000000	##FFFFFF
##187B8F	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7790

Deuteranopia (green-blind)

#5E6C8F

Tritanopia (blue-blind)

#008281

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #187b8f;
/* rgb */ color: rgb(24, 123, 143);
/* oklch */ color: oklch(53.9% 0.089 215.5);

Tailwind

colors: {
  custom: {
    50: '#6ca1af',
    500: '#187b8f',
    950: '#000000',
  },
}

SCSS

$custom: #187b8f;
$custom-light: #6ca1af;
$custom-dark: #000000;

JSON

{
  "hex": "#187b8f",
  "rgb": {
    "r": 24,
    "g": 123,
    "b": 143
  },
  "hsl": {
    "h": 190.084,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.53888,
    "c": 0.08938,
    "h": 215.5
  },
  "luminance": 0.16343
}

Semantic roles & 50–950 ramp

primary

#187B8F

secondary

#C05843

accent

#583AEE

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080F10

muted

#7B7E7F

Preview Lab

Preview with #187B8F

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

Preview Lab → · Contrast checker → · Palette generator →