#42B2D8#42B2D8

#42B2D8 is a light, moderate cyan. Relative luminance 0.380; OKLCH L 71.6% C 0.113 H 224.5°. Best body text is #000000 at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#42B2D8
RGB	rgb(66, 178, 216)
HSL	hsl(195, 66%, 55%)
HSV	hsv(195, 69%, 85%)
CMYK	cmyk(69.4%, 17.6%, 0%, 15.3%)
CIE-LAB	lab(67.99, -19.48, -28.36)
CIE-LCH	lch(67.99, 34.41, 235.51°)
OKLab	oklab(71.6% -0.0808 -0.0793)
OKLCH	oklch(71.6% 0.113 224.5)
XYZ	xyz(30.5568, 37.9535, 70.6678)
Luminance	0.3796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2D8 #D86842

analogous

#42D8B3 #42B2D8 #4267D8

triadic

#42B2D8 #D842B2 #B2D842

tetradic

#42B2D8 #B342D8 #D86842 #67D842

square

#42B2D8 #B342D8 #D86842 #67D842

split-complementary

#42B2D8 #D84267 #D8B342

monochromatic

#1B6A84 #2692B7 #42B2D8 #75C7E2 #A7DBED

Accessibility & contrast

On white

2.44

#42B2D8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.59

#42B2D8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2D8

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2D8	#FFFFFF	#000000	##000000
##42B2D8	1.00	2.44	8.59	8.59
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.59	21.00	1.00	1.00
##000000	8.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DAEDA

Deuteranopia (green-blind)

#889FD8

Tritanopia (blue-blind)

#00BDBE

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #42b2d8;
/* rgb */ color: rgb(66, 178, 216);
/* oklch */ color: oklch(71.6% 0.113 224.5);

Tailwind

colors: {
  custom: {
    50: '#88c9e4',
    500: '#42b2d8',
    950: '#000000',
  },
}

SCSS

$custom: #42b2d8;
$custom-light: #88c9e4;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2d8",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 216
  },
  "hsl": {
    "h": 195.2,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.71599,
    "c": 0.11319,
    "h": 224.5
  },
  "luminance": 0.37957
}

Semantic roles & 50–950 ramp

primary

#42B2D8

secondary

#DAAB9C

accent

#6A3FE9

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B2D8

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

Preview Lab → · Contrast checker → · Palette generator →