#187DA1#187DA1

#187DA1 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.2% C 0.102 H 228.4°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#187DA1
RGB	rgb(24, 125, 161)
HSL	hsl(196, 74%, 36%)
HSV	hsv(196, 85%, 63%)
CMYK	cmyk(85.1%, 22.4%, 0%, 36.9%)
CIE-LAB	lab(48.80, -14.37, -26.99)
CIE-LCH	lch(48.80, 30.58, 241.96°)
OKLab	oklab(55.24% -0.0675 -0.076)
OKLCH	oklch(55.24% 0.102 228.4)
XYZ	xyz(14.1407, 17.4328, 36.3309)
Luminance	0.1744 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#187DA1 #A13C18

analogous

#18A181 #187DA1 #1839A1

triadic

#187DA1 #A1187D #7DA118

tetradic

#187DA1 #8118A1 #A13C18 #39A118

square

#187DA1 #8118A1 #A13C18 #39A118

split-complementary

#187DA1 #A11839 #A18118

monochromatic

#082A36 #10546C #187DA1 #20A6D6 #4FBDE5

Accessibility & contrast

On white

4.68

#187DA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#187DA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #187DA1

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##187DA1	#FFFFFF	#000000	##FFFFFF
##187DA1	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7BA3

Deuteranopia (green-blind)

#586EA1

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #187da1;
/* rgb */ color: rgb(24, 125, 161);
/* oklch */ color: oklch(55.2% 0.102 228.4);

Tailwind

colors: {
  custom: {
    50: '#6fa2bd',
    500: '#187da1',
    950: '#000000',
  },
}

SCSS

$custom: #187da1;
$custom-light: #6fa2bd;
$custom-dark: #000000;

JSON

{
  "hex": "#187da1",
  "rgb": {
    "r": 24,
    "g": 125,
    "b": 161
  },
  "hsl": {
    "h": 195.766,
    "s": 74.054,
    "l": 36.275
  },
  "oklch": {
    "l": 0.55244,
    "c": 0.10165,
    "h": 228.4
  },
  "luminance": 0.17435
}

Semantic roles & 50–950 ramp

primary

#187DA1

secondary

#C76E4E

accent

#6837F1

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #187DA1

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

Preview Lab → · Contrast checker → · Palette generator →