#42B2CE#42B2CE

#42B2CE is a light, moderate cyan. Relative luminance 0.375; OKLCH L 71.2% C 0.107 H 217.7°. Best body text is #000000 at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#42B2CE
RGB	rgb(66, 178, 206)
HSL	hsl(192, 59%, 53%)
HSV	hsv(192, 68%, 81%)
CMYK	cmyk(68%, 13.6%, 0%, 19.2%)
CIE-LAB	lab(67.61, -22.63, -23.43)
CIE-LCH	lch(67.61, 32.57, 225.99°)
OKLab	oklab(71.18% -0.0846 -0.0653)
OKLCH	oklch(71.18% 0.107 217.7)
XYZ	xyz(29.3031, 37.4520, 64.0652)
Luminance	0.3745 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2CE #CE5E42

analogous

#42CEA4 #42B2CE #426CCE

triadic

#42B2CE #CE42B2 #B2CE42

tetradic

#42B2CE #A442CE #CE5E42 #6CCE42

square

#42B2CE #A442CE #CE5E42 #6CCE42

split-complementary

#42B2CE #CE426C #CEA442

monochromatic

#1F6577 #2B8FA7 #42B2CE #73C6DB #A3DAE7

Accessibility & contrast

On white

2.47

#42B2CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.49

#42B2CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2CE

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2CE	#FFFFFF	#000000	##000000
##42B2CE	1.00	2.47	8.49	8.49
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.49	21.00	1.00	1.00
##000000	8.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0ADD0

Deuteranopia (green-blind)

#8C9ECE

Tritanopia (blue-blind)

#00BCBB

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b2ce;
/* rgb */ color: rgb(66, 178, 206);
/* oklch */ color: oklch(71.2% 0.107 217.7);

Tailwind

colors: {
  custom: {
    50: '#87c9dd',
    500: '#42b2ce',
    950: '#000000',
  },
}

SCSS

$custom: #42b2ce;
$custom-light: #87c9dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2ce",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 206
  },
  "hsl": {
    "h": 192,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.71178,
    "c": 0.10683,
    "h": 217.7
  },
  "luminance": 0.37455
}

Semantic roles & 50–950 ramp

primary

#42B2CE

secondary

#D4A498

accent

#6546E2

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B2CE

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

Preview Lab → · Contrast checker → · Palette generator →