#42B0DD#42B0DD

#42B0DD is a light, moderate cyan. Relative luminance 0.374; OKLCH L 71.4% C 0.118 H 229.1°. Best body text is #000000 at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#42B0DD
RGB	rgb(66, 176, 221)
HSL	hsl(197, 70%, 56%)
HSV	hsv(197, 70%, 87%)
CMYK	cmyk(70.1%, 20.4%, 0%, 13.3%)
CIE-LAB	lab(67.60, -16.83, -31.71)
CIE-LCH	lch(67.60, 35.89, 242.05°)
OKLab	oklab(71.35% -0.077 -0.0889)
OKLCH	oklch(71.35% 0.118 229.1)
XYZ	xyz(30.8180, 37.4259, 73.9923)
Luminance	0.3743 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B0DD #DD6F42

analogous

#42DDBD #42B0DD #4263DD

triadic

#42B0DD #DD42B0 #B0DD42

tetradic

#42B0DD #BD42DD #DD6F42 #63DD42

square

#42B0DD #BD42DD #DD6F42 #63DD42

split-complementary

#42B0DD #DD4263 #DDBD42

monochromatic

#196A8C #2292BF #42B0DD #76C6E6 #AADBF0

Accessibility & contrast

On white

2.47

#42B0DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.49

#42B0DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B0DD

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B0DD	#FFFFFF	#000000	##000000
##42B0DD	1.00	2.47	8.49	8.49
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.49	21.00	1.00	1.00
##000000	8.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99ADDF

Deuteranopia (green-blind)

#839EDC

Tritanopia (blue-blind)

#00BDBF

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b0dd;
/* rgb */ color: rgb(66, 176, 221);
/* oklch */ color: oklch(71.4% 0.118 229.1);

Tailwind

colors: {
  custom: {
    50: '#89c7e7',
    500: '#42b0dd',
    950: '#000000',
  },
}

SCSS

$custom: #42b0dd;
$custom-light: #89c7e7;
$custom-dark: #000000;

JSON

{
  "hex": "#42b0dd",
  "rgb": {
    "r": 66,
    "g": 176,
    "b": 221
  },
  "hsl": {
    "h": 197.419,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.7135,
    "c": 0.1176,
    "h": 229.1
  },
  "luminance": 0.37429
}

Semantic roles & 50–950 ramp

primary

#42B0DD

secondary

#DDB09D

accent

#6F3BEC

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B0DD

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

Preview Lab → · Contrast checker → · Palette generator →