#42A4BF#42A4BF

#42A4BF is a light, moderate cyan. Relative luminance 0.315; OKLCH L 67.2% C 0.098 H 219.3°. Best body text is #000000 at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#42A4BF
RGB	rgb(66, 164, 191)
HSL	hsl(193, 49%, 50%)
HSV	hsv(193, 65%, 75%)
CMYK	cmyk(65.4%, 14.1%, 0%, 25.1%)
CIE-LAB	lab(62.90, -20.06, -22.31)
CIE-LCH	lch(62.90, 30.01, 228.04°)
OKLab	oklab(67.21% -0.076 -0.0621)
OKLCH	oklch(67.21% 0.098 219.3)
XYZ	xyz(24.9224, 31.4681, 54.0406)
Luminance	0.3147 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A4BF #BF5D42

analogous

#42BF9B #42A4BF #4265BF

triadic

#42A4BF #BF42A4 #A4BF42

tetradic

#42A4BF #9B42BF #BF5D42 #65BF42

square

#42A4BF #9B42BF #BF5D42 #65BF42

split-complementary

#42A4BF #BF4265 #BF9B42

monochromatic

#225665 #327D92 #42A4BF #70BACE #9DD0DE

Accessibility & contrast

On white

2.88

#42A4BF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.29

#42A4BF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A4BF

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A4BF	#FFFFFF	#000000	##000000
##42A4BF	1.00	2.88	7.29	7.29
#FFFFFF	2.88	1.00	21.00	21.00
#000000	7.29	21.00	1.00	1.00
##000000	7.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93A0C0

Deuteranopia (green-blind)

#8193BF

Tritanopia (blue-blind)

#00ADAD

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #42a4bf;
/* rgb */ color: rgb(66, 164, 191);
/* oklch */ color: oklch(67.2% 0.098 219.3);

Tailwind

colors: {
  custom: {
    50: '#84bfd2',
    500: '#42a4bf',
    950: '#000000',
  },
}

SCSS

$custom: #42a4bf;
$custom-light: #84bfd2;
$custom-dark: #000000;

JSON

{
  "hex": "#42a4bf",
  "rgb": {
    "r": 66,
    "g": 164,
    "b": 191
  },
  "hsl": {
    "h": 192.96,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.67214,
    "c": 0.09821,
    "h": 219.3
  },
  "luminance": 0.31471
}

Semantic roles & 50–950 ramp

primary

#42A4BF

secondary

#CA9F93

accent

#6D4FD9

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #42A4BF

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

Preview Lab → · Contrast checker → · Palette generator →