#42AADF#42AADF

#42AADF is a light, vivid cyan. Relative luminance 0.352; OKLCH L 70.0% C 0.122 H 234.7°. Best body text is #000000 at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#42AADF
RGB	rgb(66, 170, 223)
HSL	hsl(200, 71%, 57%)
HSV	hsv(200, 70%, 87%)
CMYK	cmyk(70.4%, 23.8%, 0%, 12.5%)
CIE-LAB	lab(65.93, -12.95, -35.39)
CIE-LCH	lch(65.93, 37.69, 249.90°)
OKLab	oklab(70.05% -0.0704 -0.0995)
OKLCH	oklch(70.05% 0.122 234.7)
XYZ	xyz(29.9355, 35.2320, 75.0205)
Luminance	0.3523 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42AADF #DF7742

analogous

#42DFC6 #42AADF #425CDF

triadic

#42AADF #DF42AA #AADF42

tetradic

#42AADF #C642DF #DF7742 #5CDF42

square

#42AADF #C642DF #DF7742 #5CDF42

split-complementary

#42AADF #DF425C #DFC642

monochromatic

#18678E #218CC3 #42AADF #76C2E8 #ABD9F1

Accessibility & contrast

On white

2.61

#42AADF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.05

#42AADF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42AADF

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42AADF	#FFFFFF	#000000	##000000
##42AADF	1.00	2.61	8.05	8.05
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.05	21.00	1.00	1.00
##000000	8.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#90A9E1

Deuteranopia (green-blind)

#7B99DE

Tritanopia (blue-blind)

#00B8BC

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #42aadf;
/* rgb */ color: rgb(66, 170, 223);
/* oklch */ color: oklch(70.0% 0.122 234.7);

Tailwind

colors: {
  custom: {
    50: '#89c3e9',
    500: '#42aadf',
    950: '#000000',
  },
}

SCSS

$custom: #42aadf;
$custom-light: #89c3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#42aadf",
  "rgb": {
    "r": 66,
    "g": 170,
    "b": 223
  },
  "hsl": {
    "h": 200.255,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.70049,
    "c": 0.12194,
    "h": 234.7
  },
  "luminance": 0.35235
}

Semantic roles & 50–950 ramp

primary

#42AADF

secondary

#DFB49E

accent

#773AEE

background

#F9FBFE

surface

#F1F7FD

border

#CBD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #42AADF

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

Preview Lab → · Contrast checker → · Palette generator →