#42B6CF#42B6CF

#42B6CF is a light, moderate cyan. Relative luminance 0.391; OKLCH L 72.2% C 0.108 H 214.9°. Best body text is #000000 at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#42B6CF
RGB	rgb(66, 182, 207)
HSL	hsl(191, 59%, 54%)
HSV	hsv(191, 68%, 81%)
CMYK	cmyk(68.1%, 12.1%, 0%, 18.8%)
CIE-LAB	lab(68.83, -24.36, -22.11)
CIE-LCH	lch(68.83, 32.90, 222.24°)
OKLab	oklab(72.17% -0.0882 -0.0616)
OKLCH	oklch(72.17% 0.108 214.9)
XYZ	xyz(30.2325, 39.1157, 64.9762)
Luminance	0.3912 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B6CF #CF5B42

analogous

#42CFA1 #42B6CF #426FCF

triadic

#42B6CF #CF42B6 #B6CF42

tetradic

#42B6CF #A142CF #CF5B42 #6FCF42

square

#42B6CF #A142CF #CF5B42 #6FCF42

split-complementary

#42B6CF #CF426F #CFA142

monochromatic

#1F6878 #2B93A9 #42B6CF #73C9DB #A4DCE8

Accessibility & contrast

On white

2.38

#42B6CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.82

#42B6CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B6CF

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B6CF	#FFFFFF	#000000	##000000
##42B6CF	1.00	2.38	8.82	8.82
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.82	21.00	1.00	1.00
##000000	8.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B0D0

Deuteranopia (green-blind)

#90A2CF

Tritanopia (blue-blind)

#00BFBE

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #42b6cf;
/* rgb */ color: rgb(66, 182, 207);
/* oklch */ color: oklch(72.2% 0.108 214.9);

Tailwind

colors: {
  custom: {
    50: '#88ccdd',
    500: '#42b6cf',
    950: '#000000',
  },
}

SCSS

$custom: #42b6cf;
$custom-light: #88ccdd;
$custom-dark: #000000;

JSON

{
  "hex": "#42b6cf",
  "rgb": {
    "r": 66,
    "g": 182,
    "b": 207
  },
  "hsl": {
    "h": 190.638,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.7217,
    "c": 0.10756,
    "h": 214.9
  },
  "luminance": 0.39119
}

Semantic roles & 50–950 ramp

primary

#42B6CF

secondary

#D5A398

accent

#6145E3

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B6CF

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

Preview Lab → · Contrast checker → · Palette generator →