#42A8D7#42A8D7

#42A8D7 is a light, moderate cyan. Relative luminance 0.341; OKLCH L 69.2% C 0.116 H 231.9°. Best body text is #000000 at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#42A8D7
RGB	rgb(66, 168, 215)
HSL	hsl(199, 65%, 55%)
HSV	hsv(199, 69%, 84%)
CMYK	cmyk(69.3%, 21.9%, 0%, 15.7%)
CIE-LAB	lab(65.02, -14.50, -32.40)
CIE-LCH	lch(65.02, 35.49, 245.88°)
OKLab	oklab(69.21% -0.0712 -0.0909)
OKLCH	oklch(69.21% 0.116 231.9)
XYZ	xyz(28.5103, 34.0666, 69.3498)
Luminance	0.3407 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A8D7 #D77142

analogous

#42D7BB #42A8D7 #425DD7

triadic

#42A8D7 #D742A8 #A8D742

tetradic

#42A8D7 #BB42D7 #D77142 #5DD742

square

#42A8D7 #BB42D7 #D77142 #5DD742

split-complementary

#42A8D7 #D7425D #D7BB42

monochromatic

#1C6283 #2688B5 #42A8D7 #75BFE2 #A7D7EC

Accessibility & contrast

On white

2.69

#42A8D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.81

#42A8D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A8D7

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A8D7	#FFFFFF	#000000	##000000
##42A8D7	1.00	2.69	7.81	7.81
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.81	21.00	1.00	1.00
##000000	7.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91A6D9

Deuteranopia (green-blind)

#7C97D6

Tritanopia (blue-blind)

#00B5B8

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #42a8d7;
/* rgb */ color: rgb(66, 168, 215);
/* oklch */ color: oklch(69.2% 0.116 231.9);

Tailwind

colors: {
  custom: {
    50: '#88c1e3',
    500: '#42a8d7',
    950: '#000000',
  },
}

SCSS

$custom: #42a8d7;
$custom-light: #88c1e3;
$custom-dark: #000000;

JSON

{
  "hex": "#42a8d7",
  "rgb": {
    "r": 66,
    "g": 168,
    "b": 215
  },
  "hsl": {
    "h": 198.926,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.69212,
    "c": 0.1155,
    "h": 231.9
  },
  "luminance": 0.3407
}

Semantic roles & 50–950 ramp

primary

#42A8D7

secondary

#DAAF9B

accent

#7540E8

background

#F9FBFD

surface

#F1F7FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #42A8D7

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

Preview Lab → · Contrast checker → · Palette generator →