#42B0D0#42B0D0

#42B0D0 is a light, moderate cyan. Relative luminance 0.368; OKLCH L 70.8% C 0.108 H 220.8°. Best body text is #000000 at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#42B0D0
RGB	rgb(66, 176, 208)
HSL	hsl(194, 60%, 54%)
HSV	hsv(194, 68%, 82%)
CMYK	cmyk(68.3%, 15.4%, 0%, 18.4%)
CIE-LAB	lab(67.10, -20.98, -25.32)
CIE-LCH	lch(67.10, 32.88, 230.36°)
OKLab	oklab(70.79% -0.0818 -0.0707)
OKLCH	oklch(70.79% 0.108 220.8)
XYZ	xyz(29.1526, 36.7597, 65.2212)
Luminance	0.3676 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B0D0 #D06242

analogous

#42D0A9 #42B0D0 #4269D0

triadic

#42B0D0 #D042B0 #B0D042

tetradic

#42B0D0 #A942D0 #D06242 #69D042

square

#42B0D0 #A942D0 #D06242 #69D042

split-complementary

#42B0D0 #D04269 #D0A942

monochromatic

#1E6579 #2A8EAA #42B0D0 #73C4DC #A4D9E8

Accessibility & contrast

On white

2.51

#42B0D0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.35

#42B0D0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B0D0

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B0D0	#FFFFFF	#000000	##000000
##42B0D0	1.00	2.51	8.35	8.35
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.35	21.00	1.00	1.00
##000000	8.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DACD2

Deuteranopia (green-blind)

#899DD0

Tritanopia (blue-blind)

#00BABA

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #42b0d0;
/* rgb */ color: rgb(66, 176, 208);
/* oklch */ color: oklch(70.8% 0.108 220.8);

Tailwind

colors: {
  custom: {
    50: '#87c7de',
    500: '#42b0d0',
    950: '#000000',
  },
}

SCSS

$custom: #42b0d0;
$custom-light: #87c7de;
$custom-dark: #000000;

JSON

{
  "hex": "#42b0d0",
  "rgb": {
    "r": 66,
    "g": 176,
    "b": 208
  },
  "hsl": {
    "h": 193.521,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.70786,
    "c": 0.10808,
    "h": 220.8
  },
  "luminance": 0.36763
}

Semantic roles & 50–950 ramp

primary

#42B0D0

secondary

#D5A699

accent

#6844E3

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B0D0

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

Preview Lab → · Contrast checker → · Palette generator →