#42B2D5#42B2D5

#42B2D5 is a light, moderate cyan. Relative luminance 0.378; OKLCH L 71.5% C 0.111 H 222.5°. Best body text is #000000 at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#42B2D5
RGB	rgb(66, 178, 213)
HSL	hsl(194, 64%, 55%)
HSV	hsv(194, 69%, 84%)
CMYK	cmyk(69%, 16.4%, 0%, 16.5%)
CIE-LAB	lab(67.87, -20.44, -26.88)
CIE-LCH	lch(67.87, 33.77, 232.76°)
OKLab	oklab(71.47% -0.0819 -0.0751)
OKLCH	oklch(71.47% 0.111 222.5)
XYZ	xyz(30.1725, 37.7997, 68.6438)
Luminance	0.3780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2D5 #D56542

analogous

#42D5AF #42B2D5 #4268D5

triadic

#42B2D5 #D542B2 #B2D542

tetradic

#42B2D5 #AF42D5 #D56542 #68D542

square

#42B2D5 #AF42D5 #D56542 #68D542

split-complementary

#42B2D5 #D54268 #D5AF42

monochromatic

#1C6880 #2891B2 #42B2D5 #74C6E0 #A6DBEB

Accessibility & contrast

On white

2.45

#42B2D5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.56

#42B2D5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2D5

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2D5	#FFFFFF	#000000	##000000
##42B2D5	1.00	2.45	8.56	8.56
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.56	21.00	1.00	1.00
##000000	8.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EAED7

Deuteranopia (green-blind)

#899FD5

Tritanopia (blue-blind)

#00BDBD

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b2d5;
/* rgb */ color: rgb(66, 178, 213);
/* oklch */ color: oklch(71.5% 0.111 222.5);

Tailwind

colors: {
  custom: {
    50: '#88c9e2',
    500: '#42b2d5',
    950: '#000000',
  },
}

SCSS

$custom: #42b2d5;
$custom-light: #88c9e2;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2d5",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 213
  },
  "hsl": {
    "h": 194.286,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.7147,
    "c": 0.11111,
    "h": 222.5
  },
  "luminance": 0.37803
}

Semantic roles & 50–950 ramp

primary

#42B2D5

secondary

#D8A99A

accent

#6941E7

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B2D5

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

Preview Lab → · Contrast checker → · Palette generator →