#187E9F#187E9F

#187E9F is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.4% C 0.100 H 226.0°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#187E9F
RGB	rgb(24, 126, 159)
HSL	hsl(195, 74%, 36%)
HSV	hsv(195, 85%, 62%)
CMYK	cmyk(84.9%, 20.8%, 0%, 37.6%)
CIE-LAB	lab(49.03, -15.65, -25.47)
CIE-LCH	lch(49.03, 29.90, 238.43°)
OKLab	oklab(55.4% -0.0692 -0.0716)
OKLCH	oklch(55.4% 0.1 226)
XYZ	xyz(14.0929, 17.6173, 35.4519)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#187E9F #9F3918

analogous

#189F7C #187E9F #183A9F

triadic

#187E9F #9F187E #7E9F18

tetradic

#187E9F #7C189F #9F3918 #3A9F18

square

#187E9F #7C189F #9F3918 #3A9F18

split-complementary

#187E9F #9F183A #9F7C18

monochromatic

#082A35 #10546A #187E9F #20A8D4 #4DBFE4

Accessibility & contrast

On white

4.64

#187E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#187E9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #187E9F

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##187E9F	#FFFFFF	#000000	##FFFFFF
##187E9F	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7BA1

Deuteranopia (green-blind)

#5B6F9F

Tritanopia (blue-blind)

#008889

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #187e9f;
/* rgb */ color: rgb(24, 126, 159);
/* oklch */ color: oklch(55.4% 0.100 226.0);

Tailwind

colors: {
  custom: {
    50: '#6fa3bb',
    500: '#187e9f',
    950: '#000000',
  },
}

SCSS

$custom: #187e9f;
$custom-light: #6fa3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#187e9f",
  "rgb": {
    "r": 24,
    "g": 126,
    "b": 159
  },
  "hsl": {
    "h": 194.667,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.55398,
    "c": 0.0996,
    "h": 226
  },
  "luminance": 0.17619
}

Semantic roles & 50–950 ramp

primary

#187E9F

secondary

#C66A4D

accent

#6537F0

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #187E9F

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

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