#42A4C8#42A4C8

#42A4C8 is a light, moderate cyan. Relative luminance 0.319; OKLCH L 67.6% C 0.104 H 225.9°. Best body text is #000000 at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#42A4C8
RGB	rgb(66, 164, 200)
HSL	hsl(196, 55%, 52%)
HSV	hsv(196, 67%, 78%)
CMYK	cmyk(67%, 18%, 0%, 21.6%)
CIE-LAB	lab(63.24, -17.22, -26.81)
CIE-LCH	lch(63.24, 31.87, 237.30°)
OKLab	oklab(67.6% -0.0726 -0.075)
OKLCH	oklch(67.6% 0.104 225.9)
XYZ	xyz(25.9434, 31.8765, 59.4179)
Luminance	0.3188 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A4C8 #C86642

analogous

#42C8A9 #42A4C8 #4261C8

triadic

#42A4C8 #C842A4 #A4C842

tetradic

#42A4C8 #A942C8 #C86642 #61C842

square

#42A4C8 #A942C8 #C86642 #61C842

split-complementary

#42A4C8 #C84261 #C8A942

monochromatic

#205A6F #2E809F #42A4C8 #71BBD6 #A1D2E4

Accessibility & contrast

On white

2.85

#42A4C8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.38

#42A4C8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A4C8

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A4C8	#FFFFFF	#000000	##000000
##42A4C8	1.00	2.85	7.38	7.38
#FFFFFF	2.85	1.00	21.00	21.00
#000000	7.38	21.00	1.00	1.00
##000000	7.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#90A1CA

Deuteranopia (green-blind)

#7E93C8

Tritanopia (blue-blind)

#00AFB0

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #42a4c8;
/* rgb */ color: rgb(66, 164, 200);
/* oklch */ color: oklch(67.6% 0.104 225.9);

Tailwind

colors: {
  custom: {
    50: '#85bfd8',
    500: '#42a4c8',
    950: '#000000',
  },
}

SCSS

$custom: #42a4c8;
$custom-light: #85bfd8;
$custom-dark: #000000;

JSON

{
  "hex": "#42a4c8",
  "rgb": {
    "r": 66,
    "g": 164,
    "b": 200
  },
  "hsl": {
    "h": 196.119,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.67598,
    "c": 0.10435,
    "h": 225.9
  },
  "luminance": 0.31879
}

Semantic roles & 50–950 ramp

primary

#42A4C8

secondary

#D0A596

accent

#714ADE

background

#F8FBFD

surface

#F0F7FA

border

#CBD0D3

text

#0C1214

muted

#7D8183

Preview Lab

Preview with #42A4C8

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

Preview Lab → · Contrast checker → · Palette generator →