#42ADD0#42ADD0

#42ADD0 is a light, moderate cyan. Relative luminance 0.356; OKLCH L 70.1% C 0.108 H 223.4°. Best body text is #000000 at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#42ADD0
RGB	rgb(66, 173, 208)
HSL	hsl(195, 60%, 54%)
HSV	hsv(195, 68%, 82%)
CMYK	cmyk(68.3%, 16.8%, 0%, 18.4%)
CIE-LAB	lab(66.21, -19.42, -26.68)
CIE-LCH	lch(66.21, 33.00, 233.96°)
OKLab	oklab(70.08% -0.0787 -0.0746)
OKLCH	oklch(70.08% 0.108 223.4)
XYZ	xyz(28.5709, 35.5963, 65.0273)
Luminance	0.3560 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ADD0 #D06542

analogous

#42D0AC #42ADD0 #4266D0

triadic

#42ADD0 #D042AD #ADD042

tetradic

#42ADD0 #AC42D0 #D06542 #66D042

square

#42ADD0 #AC42D0 #D06542 #66D042

split-complementary

#42ADD0 #D04266 #D0AC42

monochromatic

#1E6379 #2A8BAA #42ADD0 #73C2DC #A4D8E8

Accessibility & contrast

On white

2.59

#42ADD0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.12

#42ADD0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ADD0

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ADD0	#FFFFFF	#000000	##000000
##42ADD0	1.00	2.59	8.12	8.12
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.12	21.00	1.00	1.00
##000000	8.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99A9D2

Deuteranopia (green-blind)

#859BD0

Tritanopia (blue-blind)

#00B8B8

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #42add0;
/* rgb */ color: rgb(66, 173, 208);
/* oklch */ color: oklch(70.1% 0.108 223.4);

Tailwind

colors: {
  custom: {
    50: '#87c5de',
    500: '#42add0',
    950: '#000000',
  },
}

SCSS

$custom: #42add0;
$custom-light: #87c5de;
$custom-dark: #000000;

JSON

{
  "hex": "#42add0",
  "rgb": {
    "r": 66,
    "g": 173,
    "b": 208
  },
  "hsl": {
    "h": 194.789,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.70076,
    "c": 0.10845,
    "h": 223.4
  },
  "luminance": 0.35599
}

Semantic roles & 50–950 ramp

primary

#42ADD0

secondary

#D5A899

accent

#6C44E3

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #42ADD0

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

Preview Lab → · Contrast checker → · Palette generator →