#42FFFF#42FFFF

#42FFFF is a very light, vivid teal. Relative luminance 0.799; OKLCH L 91.1% C 0.144 H 194.9°. Best body text is #000000 at 16.98:1 contrast (WCAG AA passes).

Color values

HEX	#42FFFF
RGB	rgb(66, 255, 255)
HSL	hsl(180, 100%, 63%)
HSV	hsv(180, 74%, 100%)
CMYK	cmyk(74.1%, 0%, 0%, 0%)
CIE-LAB	lab(91.64, -44.66, -13.29)
CIE-LCH	lch(91.64, 46.60, 196.58°)
OKLab	oklab(91.12% -0.1387 -0.037)
OKLCH	oklch(91.12% 0.144 194.9)
XYZ	xyz(56.0484, 79.8914, 107.0549)
Luminance	0.7990 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42FFFF #FF4242

analogous

#42FFA0 #42FFFF #42A0FF

triadic

#42FFFF #FF42FF #FFFF42

tetradic

#42FFFF #A042FF #FF4242 #A0FF42

square

#42FFFF #A042FF #FF4242 #A0FF42

split-complementary

#42FFFF #FF42A0 #FFA042

monochromatic

#00C7C7 #05FFFF #42FFFF #7FFFFF #BCFFFF

Accessibility & contrast

On white

1.24

#42FFFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.98

#42FFFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42FFFF

16.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42FFFF	#FFFFFF	#000000	##000000
##42FFFF	1.00	1.24	16.98	16.98
#FFFFFF	1.24	1.00	21.00	21.00
#000000	16.98	21.00	1.00	1.00
##000000	16.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EEF2FF

Deuteranopia (green-blind)

#D3DFFF

Tritanopia (blue-blind)

#00FFFE

Achromatopsia (no color)

#E7E7E7

Design tokens & code

CSS

--color: #42ffff;
/* rgb */ color: rgb(66, 255, 255);
/* oklch */ color: oklch(91.1% 0.144 194.9);

Tailwind

colors: {
  custom: {
    50: '#94ffff',
    500: '#42ffff',
    950: '#000000',
  },
}

SCSS

$custom: #42ffff;
$custom-light: #94ffff;
$custom-dark: #000000;

JSON

{
  "hex": "#42ffff",
  "rgb": {
    "r": 66,
    "g": 255,
    "b": 255
  },
  "hsl": {
    "h": 180,
    "s": 100,
    "l": 62.941
  },
  "oklch": {
    "l": 0.91117,
    "c": 0.14359,
    "h": 194.9
  },
  "luminance": 0.79898
}

Semantic roles & 50–950 ramp

primary

#42FFFF

secondary

#C32222

accent

#0000E6

background

#FCFFFF

surface

#F6FFFF

border

#D0D7D7

text

#0F1818

muted

#808686

Preview Lab

Preview with #42FFFF

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

Preview Lab → · Contrast checker → · Palette generator →