#42B3DB#42B3DB

#42B3DB is a light, moderate cyan. Relative luminance 0.385; OKLCH L 72.0% C 0.115 H 225.6°. Best body text is #000000 at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#42B3DB
RGB	rgb(66, 179, 219)
HSL	hsl(196, 68%, 56%)
HSV	hsv(196, 70%, 86%)
CMYK	cmyk(69.9%, 18.3%, 0%, 14.1%)
CIE-LAB	lab(68.39, -19.05, -29.37)
CIE-LCH	lch(68.39, 35.01, 237.04°)
OKLab	oklab(71.96% -0.0806 -0.0822)
OKLCH	oklch(71.96% 0.115 225.6)
XYZ	xyz(31.1479, 38.5094, 72.7956)
Luminance	0.3851 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B3DB #DB6A42

analogous

#42DBB6 #42B3DB #4266DB

triadic

#42B3DB #DB42B3 #B3DB42

tetradic

#42B3DB #B642DB #DB6A42 #66DB42

square

#42B3DB #B642DB #DB6A42 #66DB42

split-complementary

#42B3DB #DB4266 #DBB642

monochromatic

#1A6C89 #2494BC #42B3DB #75C8E5 #A9DCEF

Accessibility & contrast

On white

2.41

#42B3DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.70

#42B3DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B3DB

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B3DB	#FFFFFF	#000000	##000000
##42B3DB	1.00	2.41	8.70	8.70
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.70	21.00	1.00	1.00
##000000	8.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DAFDD

Deuteranopia (green-blind)

#88A0DB

Tritanopia (blue-blind)

#00BFC0

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #42b3db;
/* rgb */ color: rgb(66, 179, 219);
/* oklch */ color: oklch(72.0% 0.115 225.6);

Tailwind

colors: {
  custom: {
    50: '#89c9e6',
    500: '#42b3db',
    950: '#000000',
  },
}

SCSS

$custom: #42b3db;
$custom-light: #89c9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#42b3db",
  "rgb": {
    "r": 66,
    "g": 179,
    "b": 219
  },
  "hsl": {
    "h": 195.686,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.71963,
    "c": 0.11516,
    "h": 225.6
  },
  "luminance": 0.38513
}

Semantic roles & 50–950 ramp

primary

#42B3DB

secondary

#DCAD9D

accent

#6A3DEB

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B3DB

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

Preview Lab → · Contrast checker → · Palette generator →