#42A3C8#42A3C8

#42A3C8 is a light, moderate cyan. Relative luminance 0.315; OKLCH L 67.4% C 0.105 H 226.8°. Best body text is #000000 at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#42A3C8
RGB	rgb(66, 163, 200)
HSL	hsl(197, 55%, 52%)
HSV	hsv(197, 67%, 78%)
CMYK	cmyk(67%, 18.5%, 0%, 21.6%)
CIE-LAB	lab(62.94, -16.68, -27.27)
CIE-LCH	lch(62.94, 31.97, 238.55°)
OKLab	oklab(67.36% -0.0716 -0.0763)
OKLCH	oklch(67.36% 0.105 226.8)
XYZ	xyz(25.7651, 31.5200, 59.3585)
Luminance	0.3152 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A3C8 #C86742

analogous

#42C8AA #42A3C8 #4260C8

triadic

#42A3C8 #C842A3 #A3C842

tetradic

#42A3C8 #AA42C8 #C86742 #60C842

square

#42A3C8 #AA42C8 #C86742 #60C842

split-complementary

#42A3C8 #C84260 #C8AA42

monochromatic

#20596F #2E809F #42A3C8 #71BAD6 #A1D1E4

Accessibility & contrast

On white

2.87

#42A3C8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.30

#42A3C8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A3C8

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A3C8	#FFFFFF	#000000	##000000
##42A3C8	1.00	2.87	7.30	7.30
#FFFFFF	2.87	1.00	21.00	21.00
#000000	7.30	21.00	1.00	1.00
##000000	7.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FA0CA

Deuteranopia (green-blind)

#7D92C8

Tritanopia (blue-blind)

#00AEAF

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #42a3c8;
/* rgb */ color: rgb(66, 163, 200);
/* oklch */ color: oklch(67.4% 0.105 226.8);

Tailwind

colors: {
  custom: {
    50: '#85bed8',
    500: '#42a3c8',
    950: '#000000',
  },
}

SCSS

$custom: #42a3c8;
$custom-light: #85bed8;
$custom-dark: #000000;

JSON

{
  "hex": "#42a3c8",
  "rgb": {
    "r": 66,
    "g": 163,
    "b": 200
  },
  "hsl": {
    "h": 196.567,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.67361,
    "c": 0.10459,
    "h": 226.8
  },
  "luminance": 0.31523
}

Semantic roles & 50–950 ramp

primary

#42A3C8

secondary

#D0A696

accent

#734ADE

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1214

muted

#7D8183

Preview Lab

Preview with #42A3C8

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

Preview Lab → · Contrast checker → · Palette generator →