#187B90#187B90

#187B90 is a mid, moderate cyan. Relative luminance 0.164; OKLCH L 53.9% C 0.090 H 216.4°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#187B90
RGB	rgb(24, 123, 144)
HSL	hsl(191, 71%, 33%)
HSV	hsv(191, 83%, 56%)
CMYK	cmyk(83.3%, 14.6%, 0%, 43.5%)
CIE-LAB	lab(47.46, -19.32, -19.09)
CIE-LCH	lch(47.46, 27.16, 224.66°)
OKLab	oklab(53.93% -0.0724 -0.0534)
OKLCH	oklch(53.93% 0.09 216.4)
XYZ	xyz(12.4915, 16.3721, 28.8819)
Luminance	0.1637 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#187B90 #902D18

analogous

#189069 #187B90 #183F90

triadic

#187B90 #90187B #7B9018

tetradic

#187B90 #691890 #902D18 #3F9018

square

#187B90 #691890 #902D18 #3F9018

split-complementary

#187B90 #90183F #906918

monochromatic

#072127 #0F4E5C #187B90 #21A8C4 #43C4E0

Accessibility & contrast

On white

4.91

#187B90 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#187B90 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #187B90

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##187B90	#FFFFFF	#000000	##FFFFFF
##187B90	1.00	4.91	4.27	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7791

Deuteranopia (green-blind)

#5D6C90

Tritanopia (blue-blind)

#008282

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #187b90;
/* rgb */ color: rgb(24, 123, 144);
/* oklch */ color: oklch(53.9% 0.090 216.4);

Tailwind

colors: {
  custom: {
    50: '#6ca1b0',
    500: '#187b90',
    950: '#000000',
  },
}

SCSS

$custom: #187b90;
$custom-light: #6ca1b0;
$custom-dark: #000000;

JSON

{
  "hex": "#187b90",
  "rgb": {
    "r": 24,
    "g": 123,
    "b": 144
  },
  "hsl": {
    "h": 190.5,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.53933,
    "c": 0.08992,
    "h": 216.4
  },
  "luminance": 0.16374
}

Semantic roles & 50–950 ramp

primary

#187B90

secondary

#C05943

accent

#593AEE

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080F10

muted

#7B7E7F

Preview Lab

Preview with #187B90

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

Preview Lab → · Contrast checker → · Palette generator →