#42B1CE#42B1CE

#42B1CE is a light, moderate cyan. Relative luminance 0.371; OKLCH L 70.9% C 0.107 H 218.5°. Best body text is #000000 at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#42B1CE
RGB	rgb(66, 177, 206)
HSL	hsl(192, 59%, 53%)
HSV	hsv(192, 68%, 81%)
CMYK	cmyk(68%, 14.1%, 0%, 19.2%)
CIE-LAB	lab(67.32, -22.12, -23.88)
CIE-LCH	lch(67.32, 32.55, 227.19°)
OKLab	oklab(70.94% -0.0835 -0.0666)
OKLCH	oklch(70.94% 0.107 218.5)
XYZ	xyz(29.1049, 37.0555, 63.9991)
Luminance	0.3706 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B1CE #CE5F42

analogous

#42CEA5 #42B1CE #426BCE

triadic

#42B1CE #CE42B1 #B1CE42

tetradic

#42B1CE #A542CE #CE5F42 #6BCE42

square

#42B1CE #A542CE #CE5F42 #6BCE42

split-complementary

#42B1CE #CE426B #CEA542

monochromatic

#1F6577 #2B8EA7 #42B1CE #73C5DB #A3D9E7

Accessibility & contrast

On white

2.50

#42B1CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.41

#42B1CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B1CE

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B1CE	#FFFFFF	#000000	##000000
##42B1CE	1.00	2.50	8.41	8.41
#FFFFFF	2.50	1.00	21.00	21.00
#000000	8.41	21.00	1.00	1.00
##000000	8.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FACD0

Deuteranopia (green-blind)

#8B9ECE

Tritanopia (blue-blind)

#00BBBA

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #42b1ce;
/* rgb */ color: rgb(66, 177, 206);
/* oklch */ color: oklch(70.9% 0.107 218.5);

Tailwind

colors: {
  custom: {
    50: '#87c8dd',
    500: '#42b1ce',
    950: '#000000',
  },
}

SCSS

$custom: #42b1ce;
$custom-light: #87c8dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42b1ce",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 206
  },
  "hsl": {
    "h": 192.429,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.7094,
    "c": 0.10683,
    "h": 218.5
  },
  "luminance": 0.37059
}

Semantic roles & 50–950 ramp

primary

#42B1CE

secondary

#D4A498

accent

#6646E2

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #42B1CE

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

Preview Lab → · Contrast checker → · Palette generator →