#42ADD6#42ADD6

#42ADD6 is a light, moderate cyan. Relative luminance 0.359; OKLCH L 70.3% C 0.113 H 227.3°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#42ADD6
RGB	rgb(66, 173, 214)
HSL	hsl(197, 64%, 55%)
HSV	hsv(197, 69%, 84%)
CMYK	cmyk(69.2%, 19.2%, 0%, 16.1%)
CIE-LAB	lab(66.44, -17.50, -29.64)
CIE-LCH	lch(66.44, 34.42, 239.44°)
OKLab	oklab(70.34% -0.0765 -0.083)
OKLCH	oklch(70.34% 0.113 227.3)
XYZ	xyz(29.3230, 35.8971, 68.9887)
Luminance	0.3590 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ADD6 #D66B42

analogous

#42D6B5 #42ADD6 #4263D6

triadic

#42ADD6 #D642AD #ADD642

tetradic

#42ADD6 #B542D6 #D66B42 #63D642

square

#42ADD6 #B542D6 #D66B42 #63D642

split-complementary

#42ADD6 #D64263 #D6B542

monochromatic

#1C6582 #278DB4 #42ADD6 #74C3E1 #A7D9EC

Accessibility & contrast

On white

2.57

#42ADD6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.18

#42ADD6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ADD6

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ADD6	#FFFFFF	#000000	##000000
##42ADD6	1.00	2.57	8.18	8.18
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.18	21.00	1.00	1.00
##000000	8.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97AAD8

Deuteranopia (green-blind)

#839BD5

Tritanopia (blue-blind)

#00B9BA

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #42add6;
/* rgb */ color: rgb(66, 173, 214);
/* oklch */ color: oklch(70.3% 0.113 227.3);

Tailwind

colors: {
  custom: {
    50: '#88c5e2',
    500: '#42add6',
    950: '#000000',
  },
}

SCSS

$custom: #42add6;
$custom-light: #88c5e2;
$custom-dark: #000000;

JSON

{
  "hex": "#42add6",
  "rgb": {
    "r": 66,
    "g": 173,
    "b": 214
  },
  "hsl": {
    "h": 196.622,
    "s": 64.348,
    "l": 54.902
  },
  "oklch": {
    "l": 0.70337,
    "c": 0.1129,
    "h": 227.3
  },
  "luminance": 0.359
}

Semantic roles & 50–950 ramp

primary

#42ADD6

secondary

#D9AC9B

accent

#6F40E7

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42ADD6

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

Preview Lab → · Contrast checker → · Palette generator →