#42A5C8#42A5C8

#42A5C8 is a light, moderate cyan. Relative luminance 0.322; OKLCH L 67.8% C 0.104 H 225.0°. Best body text is #000000 at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#42A5C8
RGB	rgb(66, 165, 200)
HSL	hsl(196, 55%, 52%)
HSV	hsv(196, 67%, 78%)
CMYK	cmyk(67%, 17.5%, 0%, 21.6%)
CIE-LAB	lab(63.54, -17.75, -26.36)
CIE-LCH	lch(63.54, 31.78, 236.05°)
OKLab	oklab(67.84% -0.0736 -0.0736)
OKLCH	oklch(67.84% 0.104 225)
XYZ	xyz(26.1230, 32.2358, 59.4778)
Luminance	0.3224 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A5C8 #C86542

analogous

#42C8A8 #42A5C8 #4262C8

triadic

#42A5C8 #C842A5 #A5C842

tetradic

#42A5C8 #A842C8 #C86542 #62C842

square

#42A5C8 #A842C8 #C86542 #62C842

split-complementary

#42A5C8 #C84262 #C8A842

monochromatic

#205B6F #2E819F #42A5C8 #71BCD6 #A1D2E4

Accessibility & contrast

On white

2.82

#42A5C8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.45

#42A5C8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A5C8

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A5C8	#FFFFFF	#000000	##000000
##42A5C8	1.00	2.82	7.45	7.45
#FFFFFF	2.82	1.00	21.00	21.00
#000000	7.45	21.00	1.00	1.00
##000000	7.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92A2CA

Deuteranopia (green-blind)

#7F94C8

Tritanopia (blue-blind)

#00AFB0

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #42a5c8;
/* rgb */ color: rgb(66, 165, 200);
/* oklch */ color: oklch(67.8% 0.104 225.0);

Tailwind

colors: {
  custom: {
    50: '#86bfd8',
    500: '#42a5c8',
    950: '#000000',
  },
}

SCSS

$custom: #42a5c8;
$custom-light: #86bfd8;
$custom-dark: #000000;

JSON

{
  "hex": "#42a5c8",
  "rgb": {
    "r": 66,
    "g": 165,
    "b": 200
  },
  "hsl": {
    "h": 195.672,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.67836,
    "c": 0.10414,
    "h": 225
  },
  "luminance": 0.32239
}

Semantic roles & 50–950 ramp

primary

#42A5C8

secondary

#D0A596

accent

#704ADE

background

#F8FBFD

surface

#F0F7FA

border

#CBD0D3

text

#0C1214

muted

#7D8183

Preview Lab

Preview with #42A5C8

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

Preview Lab → · Contrast checker → · Palette generator →