#42B6DB#42B6DB

#42B6DB is a light, moderate cyan. Relative luminance 0.397; OKLCH L 72.7% C 0.115 H 223.1°. Best body text is #000000 at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#42B6DB
RGB	rgb(66, 182, 219)
HSL	hsl(195, 68%, 56%)
HSV	hsv(195, 70%, 86%)
CMYK	cmyk(69.9%, 16.9%, 0%, 14.1%)
CIE-LAB	lab(69.27, -20.61, -28.02)
CIE-LCH	lch(69.27, 34.78, 233.67°)
OKLab	oklab(72.67% -0.0836 -0.0783)
OKLCH	oklch(72.67% 0.115 223.1)
XYZ	xyz(31.7557, 39.7250, 72.9982)
Luminance	0.3973 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B6DB #DB6742

analogous

#42DBB3 #42B6DB #4269DB

triadic

#42B6DB #DB42B6 #B6DB42

tetradic

#42B6DB #B342DB #DB6742 #69DB42

square

#42B6DB #B342DB #DB6742 #69DB42

split-complementary

#42B6DB #DB4269 #DBB342

monochromatic

#1A6E89 #2497BC #42B6DB #75CAE5 #A9DEEF

Accessibility & contrast

On white

2.35

#42B6DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.95

#42B6DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B6DB

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B6DB	#FFFFFF	#000000	##000000
##42B6DB	1.00	2.35	8.95	8.95
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.95	21.00	1.00	1.00
##000000	8.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B2DD

Deuteranopia (green-blind)

#8CA2DB

Tritanopia (blue-blind)

#00C1C2

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #42b6db;
/* rgb */ color: rgb(66, 182, 219);
/* oklch */ color: oklch(72.7% 0.115 223.1);

Tailwind

colors: {
  custom: {
    50: '#89cce6',
    500: '#42b6db',
    950: '#000000',
  },
}

SCSS

$custom: #42b6db;
$custom-light: #89cce6;
$custom-dark: #000000;

JSON

{
  "hex": "#42b6db",
  "rgb": {
    "r": 66,
    "g": 182,
    "b": 219
  },
  "hsl": {
    "h": 194.51,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.72667,
    "c": 0.11456,
    "h": 223.1
  },
  "luminance": 0.39729
}

Semantic roles & 50–950 ramp

primary

#42B6DB

secondary

#DCAC9D

accent

#673DEB

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B6DB

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

Preview Lab → · Contrast checker → · Palette generator →