#42A6CF#42A6CF

#42A6CF is a light, moderate cyan. Relative luminance 0.329; OKLCH L 68.4% C 0.109 H 228.8°. Best body text is #000000 at 7.59:1 contrast (WCAG AA passes).

Color values

HEX	#42A6CF
RGB	rgb(66, 166, 207)
HSL	hsl(197, 59%, 54%)
HSV	hsv(197, 68%, 81%)
CMYK	cmyk(68.1%, 19.8%, 0%, 18.8%)
CIE-LAB	lab(64.11, -16.03, -29.37)
CIE-LCH	lch(64.11, 33.46, 241.37°)
OKLab	oklab(68.38% -0.0721 -0.0823)
OKLCH	oklch(68.38% 0.109 228.8)
XYZ	xyz(27.1410, 32.9327, 63.9456)
Luminance	0.3294 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A6CF #CF6B42

analogous

#42CFB1 #42A6CF #425FCF

triadic

#42A6CF #CF42A6 #A6CF42

tetradic

#42A6CF #B142CF #CF6B42 #5FCF42

square

#42A6CF #B142CF #CF6B42 #5FCF42

split-complementary

#42A6CF #CF425F #CFB142

monochromatic

#1F5E78 #2B84A9 #42A6CF #73BDDB #A4D4E8

Accessibility & contrast

On white

2.77

#42A6CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.59

#42A6CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A6CF

7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A6CF	#FFFFFF	#000000	##000000
##42A6CF	1.00	2.77	7.59	7.59
#FFFFFF	2.77	1.00	21.00	21.00
#000000	7.59	21.00	1.00	1.00
##000000	7.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91A3D1

Deuteranopia (green-blind)

#7D95CE

Tritanopia (blue-blind)

#00B2B3

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #42a6cf;
/* rgb */ color: rgb(66, 166, 207);
/* oklch */ color: oklch(68.4% 0.109 228.8);

Tailwind

colors: {
  custom: {
    50: '#86c0dd',
    500: '#42a6cf',
    950: '#000000',
  },
}

SCSS

$custom: #42a6cf;
$custom-light: #86c0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42a6cf",
  "rgb": {
    "r": 66,
    "g": 166,
    "b": 207
  },
  "hsl": {
    "h": 197.447,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.68381,
    "c": 0.10937,
    "h": 228.8
  },
  "luminance": 0.32936
}

Semantic roles & 50–950 ramp

primary

#42A6CF

secondary

#D5AA98

accent

#7345E3

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A6CF

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

Preview Lab → · Contrast checker → · Palette generator →