#42A0CC#42A0CC

#42A0CC is a light, moderate cyan. Relative luminance 0.307; OKLCH L 66.8% C 0.109 H 232.0°. Best body text is #000000 at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#42A0CC
RGB	rgb(66, 160, 204)
HSL	hsl(199, 58%, 53%)
HSV	hsv(199, 68%, 80%)
CMYK	cmyk(67.6%, 21.6%, 0%, 20%)
CIE-LAB	lab(62.22, -13.77, -30.63)
CIE-LCH	lch(62.22, 33.58, 245.79°)
OKLab	oklab(66.83% -0.0671 -0.0859)
OKLCH	oklch(66.83% 0.109 232)
XYZ	xyz(25.7123, 30.6567, 61.6773)
Luminance	0.3066 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A0CC #CC6E42

analogous

#42CCB3 #42A0CC #425BCC

triadic

#42A0CC #CC42A0 #A0CC42

tetradic

#42A0CC #B342CC #CC6E42 #5BCC42

square

#42A0CC #B342CC #CC6E42 #5BCC42

split-complementary

#42A0CC #CC425B #CCB342

monochromatic

#1F5974 #2C7EA4 #42A0CC #72B8D9 #A2D0E6

Accessibility & contrast

On white

2.94

#42A0CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.13

#42A0CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A0CC

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A0CC	#FFFFFF	#000000	##000000
##42A0CC	1.00	2.94	7.13	7.13
#FFFFFF	2.94	1.00	21.00	21.00
#000000	7.13	21.00	1.00	1.00
##000000	7.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A9ECE

Deuteranopia (green-blind)

#7790CB

Tritanopia (blue-blind)

#00ACAF

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #42a0cc;
/* rgb */ color: rgb(66, 160, 204);
/* oklch */ color: oklch(66.8% 0.109 232.0);

Tailwind

colors: {
  custom: {
    50: '#86bcdb',
    500: '#42a0cc',
    950: '#000000',
  },
}

SCSS

$custom: #42a0cc;
$custom-light: #86bcdb;
$custom-dark: #000000;

JSON

{
  "hex": "#42a0cc",
  "rgb": {
    "r": 66,
    "g": 160,
    "b": 204
  },
  "hsl": {
    "h": 199.13,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.66834,
    "c": 0.10898,
    "h": 232
  },
  "luminance": 0.30659
}

Semantic roles & 50–950 ramp

primary

#42A0CC

secondary

#D3AA97

accent

#7847E1

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A0CC

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

Preview Lab → · Contrast checker → · Palette generator →