#42ADD1#42ADD1

#42ADD1 is a light, moderate cyan. Relative luminance 0.356; OKLCH L 70.1% C 0.109 H 224.1°. Best body text is #000000 at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#42ADD1
RGB	rgb(66, 173, 209)
HSL	hsl(195, 61%, 54%)
HSV	hsv(195, 68%, 82%)
CMYK	cmyk(68.4%, 17.2%, 0%, 18%)
CIE-LAB	lab(66.25, -19.10, -27.18)
CIE-LCH	lch(66.25, 33.22, 234.90°)
OKLab	oklab(70.12% -0.0784 -0.076)
OKLCH	oklch(70.12% 0.109 224.1)
XYZ	xyz(28.6943, 35.6456, 65.6773)
Luminance	0.3565 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ADD1 #D16642

analogous

#42D1AE #42ADD1 #4266D1

triadic

#42ADD1 #D142AD #ADD142

tetradic

#42ADD1 #AE42D1 #D16642 #66D142

square

#42ADD1 #AE42D1 #D16642 #66D142

split-complementary

#42ADD1 #D14266 #D1AE42

monochromatic

#1E637B #2A8BAC #42ADD1 #73C2DD #A4D8E9

Accessibility & contrast

On white

2.58

#42ADD1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.13

#42ADD1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ADD1

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ADD1	#FFFFFF	#000000	##000000
##42ADD1	1.00	2.58	8.13	8.13
#FFFFFF	2.58	1.00	21.00	21.00
#000000	8.13	21.00	1.00	1.00
##000000	8.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99A9D3

Deuteranopia (green-blind)

#859BD1

Tritanopia (blue-blind)

#00B8B9

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #42add1;
/* rgb */ color: rgb(66, 173, 209);
/* oklch */ color: oklch(70.1% 0.109 224.1);

Tailwind

colors: {
  custom: {
    50: '#87c5df',
    500: '#42add1',
    950: '#000000',
  },
}

SCSS

$custom: #42add1;
$custom-light: #87c5df;
$custom-dark: #000000;

JSON

{
  "hex": "#42add1",
  "rgb": {
    "r": 66,
    "g": 173,
    "b": 209
  },
  "hsl": {
    "h": 195.105,
    "s": 60.851,
    "l": 53.922
  },
  "oklch": {
    "l": 0.70119,
    "c": 0.10914,
    "h": 224.1
  },
  "luminance": 0.35649
}

Semantic roles & 50–950 ramp

primary

#42ADD1

secondary

#D6A899

accent

#6C44E4

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42ADD1

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

Preview Lab → · Contrast checker → · Palette generator →