#42BCD7#42BCD7

#42BCD7 is a light, moderate cyan. Relative luminance 0.420; OKLCH L 73.9% C 0.112 H 215.6°. Best body text is #000000 at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#42BCD7
RGB	rgb(66, 188, 215)
HSL	hsl(191, 65%, 55%)
HSV	hsv(191, 69%, 84%)
CMYK	cmyk(69.3%, 12.6%, 0%, 15.7%)
CIE-LAB	lab(70.89, -24.92, -23.36)
CIE-LCH	lch(70.89, 34.16, 223.15°)
OKLab	oklab(73.92% -0.0911 -0.0651)
OKLCH	oklch(73.92% 0.112 215.6)
XYZ	xyz(32.4906, 42.0273, 70.6765)
Luminance	0.4203 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BCD7 #D75D42

analogous

#42D7A7 #42BCD7 #4272D7

triadic

#42BCD7 #D742BC #BCD742

tetradic

#42BCD7 #A742D7 #D75D42 #72D742

square

#42BCD7 #A742D7 #D75D42 #72D742

split-complementary

#42BCD7 #D74272 #D7A742

monochromatic

#1C7083 #269BB5 #42BCD7 #75CEE2 #A7E0EC

Accessibility & contrast

On white

2.23

#42BCD7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.41

#42BCD7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BCD7

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BCD7	#FFFFFF	#000000	##000000
##42BCD7	1.00	2.23	9.41	9.41
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.41	21.00	1.00	1.00
##000000	9.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B6D9

Deuteranopia (green-blind)

#94A7D7

Tritanopia (blue-blind)

#00C6C4

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #42bcd7;
/* rgb */ color: rgb(66, 188, 215);
/* oklch */ color: oklch(73.9% 0.112 215.6);

Tailwind

colors: {
  custom: {
    50: '#89d0e3',
    500: '#42bcd7',
    950: '#000000',
  },
}

SCSS

$custom: #42bcd7;
$custom-light: #89d0e3;
$custom-dark: #000000;

JSON

{
  "hex": "#42bcd7",
  "rgb": {
    "r": 66,
    "g": 188,
    "b": 215
  },
  "hsl": {
    "h": 190.872,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.73916,
    "c": 0.11191,
    "h": 215.6
  },
  "luminance": 0.42031
}

Semantic roles & 50–950 ramp

primary

#42BCD7

secondary

#DAA69B

accent

#5E40E8

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BCD7

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

Preview Lab → · Contrast checker → · Palette generator →