#42B2D0#42B2D0

#42B2D0 is a light, moderate cyan. Relative luminance 0.376; OKLCH L 71.3% C 0.108 H 219.1°. Best body text is #000000 at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#42B2D0
RGB	rgb(66, 178, 208)
HSL	hsl(193, 60%, 54%)
HSV	hsv(193, 68%, 82%)
CMYK	cmyk(68.3%, 14.4%, 0%, 18.4%)
CIE-LAB	lab(67.69, -22.01, -24.42)
CIE-LCH	lch(67.69, 32.87, 227.97°)
OKLab	oklab(71.26% -0.0838 -0.0681)
OKLCH	oklch(71.26% 0.108 219.1)
XYZ	xyz(29.5476, 37.5498, 65.3529)
Luminance	0.3755 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2D0 #D06042

analogous

#42D0A7 #42B2D0 #426BD0

triadic

#42B2D0 #D042B2 #B2D042

tetradic

#42B2D0 #A742D0 #D06042 #6BD042

square

#42B2D0 #A742D0 #D06042 #6BD042

split-complementary

#42B2D0 #D0426B #D0A742

monochromatic

#1E6679 #2A8FAA #42B2D0 #73C6DC #A4DAE8

Accessibility & contrast

On white

2.47

#42B2D0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.51

#42B2D0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2D0

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2D0	#FFFFFF	#000000	##000000
##42B2D0	1.00	2.47	8.51	8.51
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.51	21.00	1.00	1.00
##000000	8.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FADD2

Deuteranopia (green-blind)

#8B9FD0

Tritanopia (blue-blind)

#00BCBB

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b2d0;
/* rgb */ color: rgb(66, 178, 208);
/* oklch */ color: oklch(71.3% 0.108 219.1);

Tailwind

colors: {
  custom: {
    50: '#87c9de',
    500: '#42b2d0',
    950: '#000000',
  },
}

SCSS

$custom: #42b2d0;
$custom-light: #87c9de;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2d0",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 208
  },
  "hsl": {
    "h": 192.676,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.7126,
    "c": 0.10796,
    "h": 219.1
  },
  "luminance": 0.37553
}

Semantic roles & 50–950 ramp

primary

#42B2D0

secondary

#D5A599

accent

#6644E3

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B2D0

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

Preview Lab → · Contrast checker → · Palette generator →