#42A6CC#42A6CC

#42A6CC is a light, moderate cyan. Relative luminance 0.328; OKLCH L 68.2% C 0.107 H 226.8°. Best body text is #000000 at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#42A6CC
RGB	rgb(66, 166, 204)
HSL	hsl(197, 58%, 53%)
HSV	hsv(197, 68%, 80%)
CMYK	cmyk(67.6%, 18.6%, 0%, 20%)
CIE-LAB	lab(63.99, -17.00, -27.89)
CIE-LCH	lch(63.99, 32.66, 238.64°)
OKLab	oklab(68.25% -0.0732 -0.078)
OKLCH	oklch(68.25% 0.107 226.8)
XYZ	xyz(26.7777, 32.7874, 62.0324)
Luminance	0.3279 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A6CC #CC6842

analogous

#42CCAD #42A6CC #4261CC

triadic

#42A6CC #CC42A6 #A6CC42

tetradic

#42A6CC #AD42CC #CC6842 #61CC42

square

#42A6CC #AD42CC #CC6842 #61CC42

split-complementary

#42A6CC #CC4261 #CCAD42

monochromatic

#1F5D74 #2C83A4 #42A6CC #72BDD9 #A2D3E6

Accessibility & contrast

On white

2.78

#42A6CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.56

#42A6CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A6CC

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A6CC	#FFFFFF	#000000	##000000
##42A6CC	1.00	2.78	7.56	7.56
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.56	21.00	1.00	1.00
##000000	7.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92A3CE

Deuteranopia (green-blind)

#7F95CC

Tritanopia (blue-blind)

#00B1B2

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #42a6cc;
/* rgb */ color: rgb(66, 166, 204);
/* oklch */ color: oklch(68.2% 0.107 226.8);

Tailwind

colors: {
  custom: {
    50: '#86c0db',
    500: '#42a6cc',
    950: '#000000',
  },
}

SCSS

$custom: #42a6cc;
$custom-light: #86c0db;
$custom-dark: #000000;

JSON

{
  "hex": "#42a6cc",
  "rgb": {
    "r": 66,
    "g": 166,
    "b": 204
  },
  "hsl": {
    "h": 196.522,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.68247,
    "c": 0.10696,
    "h": 226.8
  },
  "luminance": 0.3279
}

Semantic roles & 50–950 ramp

primary

#42A6CC

secondary

#D3A797

accent

#7147E1

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A6CC

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

Preview Lab → · Contrast checker → · Palette generator →