#42A8CD#42A8CD

#42A8CD is a light, moderate cyan. Relative luminance 0.336; OKLCH L 68.8% C 0.107 H 225.8°. Best body text is #000000 at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#42A8CD
RGB	rgb(66, 168, 205)
HSL	hsl(196, 58%, 53%)
HSV	hsv(196, 68%, 80%)
CMYK	cmyk(67.8%, 18%, 0%, 19.6%)
CIE-LAB	lab(64.62, -17.74, -27.47)
CIE-LCH	lch(64.62, 32.70, 237.15°)
OKLab	oklab(68.76% -0.0748 -0.0768)
OKLCH	oklch(68.76% 0.107 225.8)
XYZ	xyz(27.2644, 33.5683, 62.7882)
Luminance	0.3357 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A8CD #CD6742

analogous

#42CDAC #42A8CD #4262CD

triadic

#42A8CD #CD42A8 #A8CD42

tetradic

#42A8CD #AC42CD #CD6742 #62CD42

square

#42A8CD #AC42CD #CD6742 #62CD42

split-complementary

#42A8CD #CD4262 #CDAC42

monochromatic

#1F5F76 #2C85A6 #42A8CD #72BEDA #A3D5E7

Accessibility & contrast

On white

2.72

#42A8CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.71

#42A8CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A8CD

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A8CD	#FFFFFF	#000000	##000000
##42A8CD	1.00	2.72	7.71	7.71
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.71	21.00	1.00	1.00
##000000	7.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94A5CF

Deuteranopia (green-blind)

#8197CD

Tritanopia (blue-blind)

#00B3B4

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #42a8cd;
/* rgb */ color: rgb(66, 168, 205);
/* oklch */ color: oklch(68.8% 0.107 225.8);

Tailwind

colors: {
  custom: {
    50: '#86c2dc',
    500: '#42a8cd',
    950: '#000000',
  },
}

SCSS

$custom: #42a8cd;
$custom-light: #86c2dc;
$custom-dark: #000000;

JSON

{
  "hex": "#42a8cd",
  "rgb": {
    "r": 66,
    "g": 168,
    "b": 205
  },
  "hsl": {
    "h": 195.971,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.68764,
    "c": 0.10724,
    "h": 225.8
  },
  "luminance": 0.33571
}

Semantic roles & 50–950 ramp

primary

#42A8CD

secondary

#D3A797

accent

#7046E1

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A8CD

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

Preview Lab → · Contrast checker → · Palette generator →