#42C7EE#42C7EE

#42C7EE is a light, vivid cyan. Relative luminance 0.482; OKLCH L 77.4% C 0.125 H 221.7°. Best body text is #000000 at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#42C7EE
RGB	rgb(66, 199, 238)
HSL	hsl(194, 83%, 60%)
HSV	hsv(194, 72%, 93%)
CMYK	cmyk(72.3%, 16.4%, 0%, 6.7%)
CIE-LAB	lab(74.93, -23.30, -29.63)
CIE-LCH	lch(74.93, 37.70, 231.81°)
OKLab	oklab(77.44% -0.093 -0.0828)
OKLCH	oklch(77.44% 0.125 221.7)
XYZ	xyz(38.0964, 48.1737, 88.1630)
Luminance	0.4818 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C7EE #EE6942

analogous

#42EEBF #42C7EE #4271EE

triadic

#42C7EE #EE42C7 #C7EE42

tetradic

#42C7EE #BF42EE #EE6942 #71EE42

square

#42C7EE #BF42EE #EE6942 #71EE42

split-complementary

#42C7EE #EE4271 #EEBF42

monochromatic

#0F84A7 #14B1DF #42C7EE #7AD8F3 #B2E8F8

Accessibility & contrast

On white

1.97

#42C7EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.64

#42C7EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C7EE

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C7EE	#FFFFFF	#000000	##000000
##42C7EE	1.00	1.97	10.64	10.64
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.64	21.00	1.00	1.00
##000000	10.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0C2F0

Deuteranopia (green-blind)

#99B1EE

Tritanopia (blue-blind)

#00D3D4

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #42c7ee;
/* rgb */ color: rgb(66, 199, 238);
/* oklch */ color: oklch(77.4% 0.125 221.7);

Tailwind

colors: {
  custom: {
    50: '#8dd8f3',
    500: '#42c7ee',
    950: '#000000',
  },
}

SCSS

$custom: #42c7ee;
$custom-light: #8dd8f3;
$custom-dark: #000000;

JSON

{
  "hex": "#42c7ee",
  "rgb": {
    "r": 66,
    "g": 199,
    "b": 238
  },
  "hsl": {
    "h": 193.605,
    "s": 83.495,
    "l": 59.608
  },
  "oklch": {
    "l": 0.77441,
    "c": 0.12453,
    "h": 221.7
  },
  "luminance": 0.48178
}

Semantic roles & 50–950 ramp

primary

#42C7EE

secondary

#E7B4A5

accent

#5C2EFA

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #42C7EE

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

Preview Lab → · Contrast checker → · Palette generator →