#187F9F#187F9F

#187F9F is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.7% C 0.099 H 225.0°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#187F9F
RGB	rgb(24, 127, 159)
HSL	hsl(194, 74%, 36%)
HSV	hsv(194, 85%, 62%)
CMYK	cmyk(84.9%, 20.1%, 0%, 37.6%)
CIE-LAB	lab(49.34, -16.21, -24.99)
CIE-LCH	lch(49.34, 29.78, 237.03°)
OKLab	oklab(55.65% -0.0702 -0.0702)
OKLCH	oklch(55.65% 0.099 225)
XYZ	xyz(14.2214, 17.8743, 35.4947)
Luminance	0.1788 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#187F9F #9F3818

analogous

#189F7B #187F9F #183C9F

triadic

#187F9F #9F187F #7F9F18

tetradic

#187F9F #7B189F #9F3818 #3C9F18

square

#187F9F #7B189F #9F3818 #3C9F18

split-complementary

#187F9F #9F183C #9F7B18

monochromatic

#082A35 #10556A #187F9F #20A9D4 #4DC0E4

Accessibility & contrast

On white

4.59

#187F9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#187F9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #187F9F

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##187F9F	#FFFFFF	#000000	##FFFFFF
##187F9F	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7CA1

Deuteranopia (green-blind)

#5C709F

Tritanopia (blue-blind)

#008889

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #187f9f;
/* rgb */ color: rgb(24, 127, 159);
/* oklch */ color: oklch(55.7% 0.099 225.0);

Tailwind

colors: {
  custom: {
    50: '#6fa4bb',
    500: '#187f9f',
    950: '#000000',
  },
}

SCSS

$custom: #187f9f;
$custom-light: #6fa4bb;
$custom-dark: #000000;

JSON

{
  "hex": "#187f9f",
  "rgb": {
    "r": 24,
    "g": 127,
    "b": 159
  },
  "hsl": {
    "h": 194.222,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.55651,
    "c": 0.09928,
    "h": 225
  },
  "luminance": 0.17876
}

Semantic roles & 50–950 ramp

primary

#187F9F

secondary

#C6694D

accent

#6337F0

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #187F9F

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

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