#42BFDD#42BFDD

#42BFDD is a light, moderate cyan. Relative luminance 0.436; OKLCH L 74.9% C 0.115 H 217.2°. Best body text is #000000 at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#42BFDD
RGB	rgb(66, 191, 221)
HSL	hsl(192, 70%, 56%)
HSV	hsv(192, 70%, 87%)
CMYK	cmyk(70.1%, 13.6%, 0%, 13.3%)
CIE-LAB	lab(71.98, -24.58, -24.95)
CIE-LCH	lch(71.98, 35.02, 225.44°)
OKLab	oklab(74.87% -0.0917 -0.0696)
OKLCH	oklch(74.87% 0.115 217.2)
XYZ	xyz(33.9233, 43.6364, 75.0274)
Luminance	0.4364 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BFDD #DD6042

analogous

#42DDAE #42BFDD #4272DD

triadic

#42BFDD #DD42BF #BFDD42

tetradic

#42BFDD #AE42DD #DD6042 #72DD42

square

#42BFDD #AE42DD #DD6042 #72DD42

split-complementary

#42BFDD #DD4272 #DDAE42

monochromatic

#19758C #22A1BF #42BFDD #76D1E6 #AAE2F0

Accessibility & contrast

On white

2.16

#42BFDD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.73

#42BFDD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BFDD

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BFDD	#FFFFFF	#000000	##000000
##42BFDD	1.00	2.16	9.73	9.73
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.73	21.00	1.00	1.00
##000000	9.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ABB9DF

Deuteranopia (green-blind)

#96AADD

Tritanopia (blue-blind)

#00CAC8

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #42bfdd;
/* rgb */ color: rgb(66, 191, 221);
/* oklch */ color: oklch(74.9% 0.115 217.2);

Tailwind

colors: {
  custom: {
    50: '#8ad2e7',
    500: '#42bfdd',
    950: '#000000',
  },
}

SCSS

$custom: #42bfdd;
$custom-light: #8ad2e7;
$custom-dark: #000000;

JSON

{
  "hex": "#42bfdd",
  "rgb": {
    "r": 66,
    "g": 191,
    "b": 221
  },
  "hsl": {
    "h": 191.613,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.74868,
    "c": 0.11509,
    "h": 217.2
  },
  "luminance": 0.4364
}

Semantic roles & 50–950 ramp

primary

#42BFDD

secondary

#DDAA9D

accent

#5E3BEC

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0D1416

muted

#7E8284

Preview Lab

Preview with #42BFDD

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

Preview Lab → · Contrast checker → · Palette generator →