#42ADD3#42ADD3

#42ADD3 is a light, moderate cyan. Relative luminance 0.357; OKLCH L 70.2% C 0.111 H 225.4°. Best body text is #000000 at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#42ADD3
RGB	rgb(66, 173, 211)
HSL	hsl(196, 62%, 54%)
HSV	hsv(196, 69%, 83%)
CMYK	cmyk(68.7%, 18%, 0%, 17.3%)
CIE-LAB	lab(66.32, -18.46, -28.16)
CIE-LCH	lch(66.32, 33.67, 236.76°)
OKLab	oklab(70.21% -0.0776 -0.0788)
OKLCH	oklch(70.21% 0.111 225.4)
XYZ	xyz(28.9434, 35.7453, 66.9895)
Luminance	0.3575 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ADD3 #D36842

analogous

#42D3B1 #42ADD3 #4265D3

triadic

#42ADD3 #D342AD #ADD342

tetradic

#42ADD3 #B142D3 #D36842 #65D342

square

#42ADD3 #B142D3 #D36842 #65D342

split-complementary

#42ADD3 #D34265 #D3B142

monochromatic

#1D647D #298CAF #42ADD3 #74C3DF #A5D8EA

Accessibility & contrast

On white

2.58

#42ADD3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.15

#42ADD3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ADD3

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ADD3	#FFFFFF	#000000	##000000
##42ADD3	1.00	2.58	8.15	8.15
#FFFFFF	2.58	1.00	21.00	21.00
#000000	8.15	21.00	1.00	1.00
##000000	8.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98AAD5

Deuteranopia (green-blind)

#849BD3

Tritanopia (blue-blind)

#00B8B9

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #42add3;
/* rgb */ color: rgb(66, 173, 211);
/* oklch */ color: oklch(70.2% 0.111 225.4);

Tailwind

colors: {
  custom: {
    50: '#87c5e0',
    500: '#42add3',
    950: '#000000',
  },
}

SCSS

$custom: #42add3;
$custom-light: #87c5e0;
$custom-dark: #000000;

JSON

{
  "hex": "#42add3",
  "rgb": {
    "r": 66,
    "g": 173,
    "b": 211
  },
  "hsl": {
    "h": 195.724,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.70206,
    "c": 0.1106,
    "h": 225.4
  },
  "luminance": 0.35749
}

Semantic roles & 50–950 ramp

primary

#42ADD3

secondary

#D7AA9A

accent

#6D42E5

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42ADD3

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

Preview Lab → · Contrast checker → · Palette generator →