#42BBD6#42BBD6

#42BBD6 is a light, moderate cyan. Relative luminance 0.416; OKLCH L 73.6% C 0.111 H 215.7°. Best body text is #000000 at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#42BBD6
RGB	rgb(66, 187, 214)
HSL	hsl(191, 64%, 55%)
HSV	hsv(191, 69%, 84%)
CMYK	cmyk(69.2%, 12.6%, 0%, 16.1%)
CIE-LAB	lab(70.56, -24.73, -23.32)
CIE-LCH	lch(70.56, 33.99, 223.32°)
OKLab	oklab(73.64% -0.0904 -0.0649)
OKLCH	oklch(73.64% 0.111 215.7)
XYZ	xyz(32.1496, 41.5503, 69.9309)
Luminance	0.4155 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BBD6 #D65D42

analogous

#42D6A7 #42BBD6 #4271D6

triadic

#42BBD6 #D642BB #BBD642

tetradic

#42BBD6 #A742D6 #D65D42 #71D642

square

#42BBD6 #A742D6 #D65D42 #71D642

split-complementary

#42BBD6 #D64271 #D6A742

monochromatic

#1C6F82 #279AB4 #42BBD6 #74CDE1 #A7DFEC

Accessibility & contrast

On white

2.26

#42BBD6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.31

#42BBD6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BBD6

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BBD6	#FFFFFF	#000000	##000000
##42BBD6	1.00	2.26	9.31	9.31
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.31	21.00	1.00	1.00
##000000	9.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8B5D8

Deuteranopia (green-blind)

#94A6D6

Tritanopia (blue-blind)

#00C5C3

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #42bbd6;
/* rgb */ color: rgb(66, 187, 214);
/* oklch */ color: oklch(73.6% 0.111 215.7);

Tailwind

colors: {
  custom: {
    50: '#89cfe2',
    500: '#42bbd6',
    950: '#000000',
  },
}

SCSS

$custom: #42bbd6;
$custom-light: #89cfe2;
$custom-dark: #000000;

JSON

{
  "hex": "#42bbd6",
  "rgb": {
    "r": 66,
    "g": 187,
    "b": 214
  },
  "hsl": {
    "h": 190.946,
    "s": 64.348,
    "l": 54.902
  },
  "oklch": {
    "l": 0.73639,
    "c": 0.11135,
    "h": 215.7
  },
  "luminance": 0.41554
}

Semantic roles & 50–950 ramp

primary

#42BBD6

secondary

#D9A69B

accent

#5F40E7

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BBD6

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

Preview Lab → · Contrast checker → · Palette generator →