#42BFDB#42BFDB

#42BFDB is a light, moderate cyan. Relative luminance 0.435; OKLCH L 74.8% C 0.114 H 215.9°. Best body text is #000000 at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#42BFDB
RGB	rgb(66, 191, 219)
HSL	hsl(191, 68%, 56%)
HSV	hsv(191, 70%, 86%)
CMYK	cmyk(69.9%, 12.8%, 0%, 14.1%)
CIE-LAB	lab(71.91, -25.19, -23.97)
CIE-LCH	lch(71.91, 34.78, 223.58°)
OKLab	oklab(74.79% -0.0924 -0.0668)
OKLCH	oklch(74.79% 0.114 215.9)
XYZ	xyz(33.6584, 43.5305, 73.6324)
Luminance	0.4353 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BFDB #DB5E42

analogous

#42DBAA #42BFDB #4272DB

triadic

#42BFDB #DB42BF #BFDB42

tetradic

#42BFDB #AA42DB #DB5E42 #72DB42

square

#42BFDB #AA42DB #DB5E42 #72DB42

split-complementary

#42BFDB #DB4272 #DBAA42

monochromatic

#1A7489 #24A0BC #42BFDB #75D0E5 #A9E2EF

Accessibility & contrast

On white

2.16

#42BFDB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.71

#42BFDB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BFDB

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BFDB	#FFFFFF	#000000	##000000
##42BFDB	1.00	2.16	9.71	9.71
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.71	21.00	1.00	1.00
##000000	9.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACB9DD

Deuteranopia (green-blind)

#96A9DB

Tritanopia (blue-blind)

#00C9C8

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #42bfdb;
/* rgb */ color: rgb(66, 191, 219);
/* oklch */ color: oklch(74.8% 0.114 215.9);

Tailwind

colors: {
  custom: {
    50: '#8ad2e6',
    500: '#42bfdb',
    950: '#000000',
  },
}

SCSS

$custom: #42bfdb;
$custom-light: #8ad2e6;
$custom-dark: #000000;

JSON

{
  "hex": "#42bfdb",
  "rgb": {
    "r": 66,
    "g": 191,
    "b": 219
  },
  "hsl": {
    "h": 190.98,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.74787,
    "c": 0.11406,
    "h": 215.9
  },
  "luminance": 0.43534
}

Semantic roles & 50–950 ramp

primary

#42BFDB

secondary

#DCA89D

accent

#5D3DEB

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1416

muted

#7E8284

Preview Lab

Preview with #42BFDB

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

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