#42BFD9#42BFD9

#42BFD9 is a light, moderate cyan. Relative luminance 0.434; OKLCH L 74.7% C 0.113 H 214.5°. Best body text is #000000 at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#42BFD9
RGB	rgb(66, 191, 217)
HSL	hsl(190, 67%, 55%)
HSV	hsv(190, 70%, 85%)
CMYK	cmyk(69.6%, 12%, 0%, 14.9%)
CIE-LAB	lab(71.84, -25.81, -22.99)
CIE-LCH	lch(71.84, 34.57, 221.70°)
OKLab	oklab(74.71% -0.0932 -0.064)
OKLCH	oklch(74.71% 0.113 214.5)
XYZ	xyz(33.3967, 43.4258, 72.2541)
Luminance	0.4343 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BFD9 #D95C42

analogous

#42D9A7 #42BFD9 #4273D9

triadic

#42BFD9 #D942BF #BFD942

tetradic

#42BFD9 #A742D9 #D95C42 #73D942

square

#42BFD9 #A742D9 #D95C42 #73D942

split-complementary

#42BFD9 #D94273 #D9A742

monochromatic

#1B7386 #259FB9 #42BFD9 #75D0E3 #A8E2ED

Accessibility & contrast

On white

2.17

#42BFD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.69

#42BFD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BFD9

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BFD9	#FFFFFF	#000000	##000000
##42BFD9	1.00	2.17	9.69	9.69
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.69	21.00	1.00	1.00
##000000	9.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACB9DA

Deuteranopia (green-blind)

#97A9D9

Tritanopia (blue-blind)

#00C9C7

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #42bfd9;
/* rgb */ color: rgb(66, 191, 217);
/* oklch */ color: oklch(74.7% 0.113 214.5);

Tailwind

colors: {
  custom: {
    50: '#8ad2e4',
    500: '#42bfd9',
    950: '#000000',
  },
}

SCSS

$custom: #42bfd9;
$custom-light: #8ad2e4;
$custom-dark: #000000;

JSON

{
  "hex": "#42bfd9",
  "rgb": {
    "r": 66,
    "g": 191,
    "b": 217
  },
  "hsl": {
    "h": 190.331,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.74707,
    "c": 0.11311,
    "h": 214.5
  },
  "luminance": 0.4343
}

Semantic roles & 50–950 ramp

primary

#42BFD9

secondary

#DBA79C

accent

#5C3EE9

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BFD9

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

Preview Lab → · Contrast checker → · Palette generator →