#187C9F#187C9F

#187C9F is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 54.9% C 0.100 H 227.9°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#187C9F
RGB	rgb(24, 124, 159)
HSL	hsl(196, 74%, 36%)
HSV	hsv(196, 85%, 62%)
CMYK	cmyk(84.9%, 22%, 0%, 37.6%)
CIE-LAB	lab(48.40, -14.54, -26.45)
CIE-LCH	lch(48.40, 30.18, 241.21°)
OKLab	oklab(54.89% -0.0673 -0.0744)
OKLCH	oklch(54.89% 0.1 227.9)
XYZ	xyz(13.8398, 17.1109, 35.3675)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#187C9F #9F3B18

analogous

#189F7E #187C9F #18389F

triadic

#187C9F #9F187C #7C9F18

tetradic

#187C9F #7E189F #9F3B18 #389F18

square

#187C9F #7E189F #9F3B18 #389F18

split-complementary

#187C9F #9F1838 #9F7E18

monochromatic

#082935 #10536A #187C9F #20A5D4 #4DBDE4

Accessibility & contrast

On white

4.75

#187C9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#187C9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #187C9F

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##187C9F	#FFFFFF	#000000	##FFFFFF
##187C9F	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697AA1

Deuteranopia (green-blind)

#586E9F

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #187c9f;
/* rgb */ color: rgb(24, 124, 159);
/* oklch */ color: oklch(54.9% 0.100 227.9);

Tailwind

colors: {
  custom: {
    50: '#6fa2bb',
    500: '#187c9f',
    950: '#000000',
  },
}

SCSS

$custom: #187c9f;
$custom-light: #6fa2bb;
$custom-dark: #000000;

JSON

{
  "hex": "#187c9f",
  "rgb": {
    "r": 24,
    "g": 124,
    "b": 159
  },
  "hsl": {
    "h": 195.556,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.54894,
    "c": 0.10037,
    "h": 227.9
  },
  "luminance": 0.17113
}

Semantic roles & 50–950 ramp

primary

#187C9F

secondary

#C66C4D

accent

#6737F0

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #187C9F

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

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