#42A1D8#42A1D8

#42A1D8 is a light, vivid cyan. Relative luminance 0.316; OKLCH L 67.6% C 0.120 H 237.8°. Best body text is #000000 at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#42A1D8
RGB	rgb(66, 161, 216)
HSL	hsl(202, 66%, 55%)
HSV	hsv(202, 69%, 85%)
CMYK	cmyk(69.4%, 25.5%, 0%, 15.3%)
CIE-LAB	lab(63.01, -10.35, -36.06)
CIE-LCH	lch(63.01, 37.52, 253.99°)
OKLab	oklab(67.63% -0.064 -0.1016)
OKLCH	oklch(67.63% 0.12 237.8)
XYZ	xyz(27.3815, 31.6028, 69.6093)
Luminance	0.3161 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A1D8 #D87942

analogous

#42D8C4 #42A1D8 #4256D8

triadic

#42A1D8 #D842A1 #A1D842

tetradic

#42A1D8 #C442D8 #D87942 #56D842

square

#42A1D8 #C442D8 #D87942 #56D842

split-complementary

#42A1D8 #D84256 #D8C442

monochromatic

#1B5E84 #2682B7 #42A1D8 #75BAE2 #A7D3ED

Accessibility & contrast

On white

2.87

#42A1D8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.32

#42A1D8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A1D8

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A1D8	#FFFFFF	#000000	##000000
##42A1D8	1.00	2.87	7.32	7.32
#FFFFFF	2.87	1.00	21.00	21.00
#000000	7.32	21.00	1.00	1.00
##000000	7.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#87A1DB

Deuteranopia (green-blind)

#7392D7

Tritanopia (blue-blind)

#00AFB4

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #42a1d8;
/* rgb */ color: rgb(66, 161, 216);
/* oklch */ color: oklch(67.6% 0.120 237.8);

Tailwind

colors: {
  custom: {
    50: '#87bce4',
    500: '#42a1d8',
    950: '#000000',
  },
}

SCSS

$custom: #42a1d8;
$custom-light: #87bce4;
$custom-dark: #000000;

JSON

{
  "hex": "#42a1d8",
  "rgb": {
    "r": 66,
    "g": 161,
    "b": 216
  },
  "hsl": {
    "h": 202,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.67633,
    "c": 0.12002,
    "h": 237.8
  },
  "luminance": 0.31606
}

Semantic roles & 50–950 ramp

primary

#42A1D8

secondary

#DAB39C

accent

#7D3FE9

background

#F9FBFD

surface

#F1F6FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #42A1D8

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

Preview Lab → · Contrast checker → · Palette generator →