#42A4D4#42A4D4

#42A4D4 is a light, moderate cyan. Relative luminance 0.325; OKLCH L 68.1% C 0.115 H 233.4°. Best body text is #000000 at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#42A4D4
RGB	rgb(66, 164, 212)
HSL	hsl(200, 63%, 55%)
HSV	hsv(200, 69%, 83%)
CMYK	cmyk(68.9%, 22.6%, 0%, 16.9%)
CIE-LAB	lab(63.72, -13.32, -32.74)
CIE-LCH	lch(63.72, 35.35, 247.86°)
OKLab	oklab(68.14% -0.0683 -0.092)
OKLCH	oklch(68.14% 0.115 233.4)
XYZ	xyz(27.4012, 32.4596, 67.0958)
Luminance	0.3246 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A4D4 #D47242

analogous

#42D4BB #42A4D4 #425BD4

triadic

#42A4D4 #D442A4 #A4D442

tetradic

#42A4D4 #BB42D4 #D47242 #5BD442

square

#42A4D4 #BB42D4 #D47242 #5BD442

split-complementary

#42A4D4 #D4425B #D4BB42

monochromatic

#1D5F7F #2884B1 #42A4D4 #74BCDF #A6D4EB

Accessibility & contrast

On white

2.80

#42A4D4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.49

#42A4D4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A4D4

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A4D4	#FFFFFF	#000000	##000000
##42A4D4	1.00	2.80	7.49	7.49
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.49	21.00	1.00	1.00
##000000	7.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CA2D6

Deuteranopia (green-blind)

#7894D3

Tritanopia (blue-blind)

#00B1B4

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #42a4d4;
/* rgb */ color: rgb(66, 164, 212);
/* oklch */ color: oklch(68.1% 0.115 233.4);

Tailwind

colors: {
  custom: {
    50: '#87bfe1',
    500: '#42a4d4',
    950: '#000000',
  },
}

SCSS

$custom: #42a4d4;
$custom-light: #87bfe1;
$custom-dark: #000000;

JSON

{
  "hex": "#42a4d4",
  "rgb": {
    "r": 66,
    "g": 164,
    "b": 212
  },
  "hsl": {
    "h": 199.726,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.6814,
    "c": 0.11454,
    "h": 233.4
  },
  "luminance": 0.32463
}

Semantic roles & 50–950 ramp

primary

#42A4D4

secondary

#D8AE9A

accent

#7842E6

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A4D4

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

Preview Lab → · Contrast checker → · Palette generator →