#42B0DB#42B0DB

#42B0DB is a light, moderate cyan. Relative luminance 0.373; OKLCH L 71.3% C 0.116 H 227.9°. Best body text is #000000 at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#42B0DB
RGB	rgb(66, 176, 219)
HSL	hsl(197, 68%, 56%)
HSV	hsv(197, 70%, 86%)
CMYK	cmyk(69.9%, 19.6%, 0%, 14.1%)
CIE-LAB	lab(67.52, -17.47, -30.73)
CIE-LCH	lch(67.52, 35.35, 240.38°)
OKLab	oklab(71.26% -0.0777 -0.0861)
OKLCH	oklch(71.26% 0.116 227.9)
XYZ	xyz(30.5531, 37.3199, 72.5973)
Luminance	0.3732 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B0DB #DB6D42

analogous

#42DBBA #42B0DB #4263DB

triadic

#42B0DB #DB42B0 #B0DB42

tetradic

#42B0DB #BA42DB #DB6D42 #63DB42

square

#42B0DB #BA42DB #DB6D42 #63DB42

split-complementary

#42B0DB #DB4263 #DBBA42

monochromatic

#1A6A89 #2491BC #42B0DB #75C5E5 #A9DBEF

Accessibility & contrast

On white

2.48

#42B0DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.46

#42B0DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B0DB

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B0DB	#FFFFFF	#000000	##000000
##42B0DB	1.00	2.48	8.46	8.46
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.46	21.00	1.00	1.00
##000000	8.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99ADDD

Deuteranopia (green-blind)

#849EDA

Tritanopia (blue-blind)

#00BCBE

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #42b0db;
/* rgb */ color: rgb(66, 176, 219);
/* oklch */ color: oklch(71.3% 0.116 227.9);

Tailwind

colors: {
  custom: {
    50: '#89c7e6',
    500: '#42b0db',
    950: '#000000',
  },
}

SCSS

$custom: #42b0db;
$custom-light: #89c7e6;
$custom-dark: #000000;

JSON

{
  "hex": "#42b0db",
  "rgb": {
    "r": 66,
    "g": 176,
    "b": 219
  },
  "hsl": {
    "h": 196.863,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.71261,
    "c": 0.11598,
    "h": 227.9
  },
  "luminance": 0.37323
}

Semantic roles & 50–950 ramp

primary

#42B0DB

secondary

#DCAF9D

accent

#6E3DEB

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B0DB

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

Preview Lab → · Contrast checker → · Palette generator →