#42B3D3#42B3D3

#42B3D3 is a light, moderate cyan. Relative luminance 0.381; OKLCH L 71.6% C 0.110 H 220.3°. Best body text is #000000 at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#42B3D3
RGB	rgb(66, 179, 211)
HSL	hsl(193, 62%, 54%)
HSV	hsv(193, 69%, 83%)
CMYK	cmyk(68.7%, 15.2%, 0%, 17.3%)
CIE-LAB	lab(68.09, -21.58, -25.45)
CIE-LCH	lch(68.09, 33.37, 229.69°)
OKLab	oklab(71.62% -0.0836 -0.071)
OKLCH	oklch(71.62% 0.11 220.3)
XYZ	xyz(30.1199, 38.0982, 67.3817)
Luminance	0.3810 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B3D3 #D36242

analogous

#42D3AA #42B3D3 #426BD3

triadic

#42B3D3 #D342B3 #B3D342

tetradic

#42B3D3 #AA42D3 #D36242 #6BD342

square

#42B3D3 #AA42D3 #D36242 #6BD342

split-complementary

#42B3D3 #D3426B #D3AA42

monochromatic

#1D687D #2991AF #42B3D3 #74C7DF #A5DBEA

Accessibility & contrast

On white

2.44

#42B3D3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.62

#42B3D3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B3D3

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B3D3	#FFFFFF	#000000	##000000
##42B3D3	1.00	2.44	8.62	8.62
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.62	21.00	1.00	1.00
##000000	8.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0AED5

Deuteranopia (green-blind)

#8BA0D3

Tritanopia (blue-blind)

#00BDBD

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #42b3d3;
/* rgb */ color: rgb(66, 179, 211);
/* oklch */ color: oklch(71.6% 0.110 220.3);

Tailwind

colors: {
  custom: {
    50: '#88cae0',
    500: '#42b3d3',
    950: '#000000',
  },
}

SCSS

$custom: #42b3d3;
$custom-light: #88cae0;
$custom-dark: #000000;

JSON

{
  "hex": "#42b3d3",
  "rgb": {
    "r": 66,
    "g": 179,
    "b": 211
  },
  "hsl": {
    "h": 193.241,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.71622,
    "c": 0.10972,
    "h": 220.3
  },
  "luminance": 0.38102
}

Semantic roles & 50–950 ramp

primary

#42B3D3

secondary

#D7A79A

accent

#6642E5

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B3D3

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

Preview Lab → · Contrast checker → · Palette generator →