#42B9D2#42B9D2

#42B9D2 is a light, moderate cyan. Relative luminance 0.405; OKLCH L 73.0% C 0.109 H 214.5°. Best body text is #000000 at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#42B9D2
RGB	rgb(66, 185, 210)
HSL	hsl(190, 62%, 54%)
HSV	hsv(190, 69%, 82%)
CMYK	cmyk(68.6%, 11.9%, 0%, 17.6%)
CIE-LAB	lab(69.83, -24.95, -22.24)
CIE-LCH	lch(69.83, 33.43, 221.72°)
OKLab	oklab(73% -0.09 -0.0619)
OKLCH	oklch(73% 0.109 214.5)
XYZ	xyz(31.2237, 40.5058, 67.1331)
Luminance	0.4051 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B9D2 #D25B42

analogous

#42D2A3 #42B9D2 #4271D2

triadic

#42B9D2 #D242B9 #B9D242

tetradic

#42B9D2 #A342D2 #D25B42 #71D242

square

#42B9D2 #A342D2 #D25B42 #71D242

split-complementary

#42B9D2 #D24271 #D2A342

monochromatic

#1E6C7C #2997AD #42B9D2 #73CBDE #A5DEEA

Accessibility & contrast

On white

2.31

#42B9D2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.10

#42B9D2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B9D2

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B9D2	#FFFFFF	#000000	##000000
##42B9D2	1.00	2.31	9.10	9.10
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.10	21.00	1.00	1.00
##000000	9.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7B3D3

Deuteranopia (green-blind)

#93A4D2

Tritanopia (blue-blind)

#00C2C1

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #42b9d2;
/* rgb */ color: rgb(66, 185, 210);
/* oklch */ color: oklch(73.0% 0.109 214.5);

Tailwind

colors: {
  custom: {
    50: '#88cedf',
    500: '#42b9d2',
    950: '#000000',
  },
}

SCSS

$custom: #42b9d2;
$custom-light: #88cedf;
$custom-dark: #000000;

JSON

{
  "hex": "#42b9d2",
  "rgb": {
    "r": 66,
    "g": 185,
    "b": 210
  },
  "hsl": {
    "h": 190.417,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.73004,
    "c": 0.10927,
    "h": 214.5
  },
  "luminance": 0.40509
}

Semantic roles & 50–950 ramp

primary

#42B9D2

secondary

#D7A499

accent

#5F43E5

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B9D2

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

Preview Lab → · Contrast checker → · Palette generator →