#42B3CE#42B3CE

#42B3CE is a light, moderate cyan. Relative luminance 0.379; OKLCH L 71.4% C 0.107 H 216.8°. Best body text is #000000 at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#42B3CE
RGB	rgb(66, 179, 206)
HSL	hsl(192, 59%, 53%)
HSV	hsv(192, 68%, 81%)
CMYK	cmyk(68%, 13.1%, 0%, 19.2%)
CIE-LAB	lab(67.91, -23.14, -22.97)
CIE-LCH	lch(67.91, 32.61, 224.79°)
OKLab	oklab(71.42% -0.0856 -0.064)
OKLCH	oklch(71.42% 0.107 216.8)
XYZ	xyz(29.5028, 37.8514, 64.1317)
Luminance	0.3785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B3CE #CE5D42

analogous

#42CEA3 #42B3CE #426DCE

triadic

#42B3CE #CE42B3 #B3CE42

tetradic

#42B3CE #A342CE #CE5D42 #6DCE42

square

#42B3CE #A342CE #CE5D42 #6DCE42

split-complementary

#42B3CE #CE426D #CEA342

monochromatic

#1F6677 #2B8FA7 #42B3CE #73C7DB #A3DAE7

Accessibility & contrast

On white

2.45

#42B3CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.57

#42B3CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B3CE

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B3CE	#FFFFFF	#000000	##000000
##42B3CE	1.00	2.45	8.57	8.57
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.57	21.00	1.00	1.00
##000000	8.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1AED0

Deuteranopia (green-blind)

#8D9FCE

Tritanopia (blue-blind)

#00BDBB

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b3ce;
/* rgb */ color: rgb(66, 179, 206);
/* oklch */ color: oklch(71.4% 0.107 216.8);

Tailwind

colors: {
  custom: {
    50: '#87cadd',
    500: '#42b3ce',
    950: '#000000',
  },
}

SCSS

$custom: #42b3ce;
$custom-light: #87cadd;
$custom-dark: #000000;

JSON

{
  "hex": "#42b3ce",
  "rgb": {
    "r": 66,
    "g": 179,
    "b": 206
  },
  "hsl": {
    "h": 191.571,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.71416,
    "c": 0.10686,
    "h": 216.8
  },
  "luminance": 0.37855
}

Semantic roles & 50–950 ramp

primary

#42B3CE

secondary

#D4A398

accent

#6446E2

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B3CE

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

Preview Lab → · Contrast checker → · Palette generator →