#42A3D4#42A3D4

#42A3D4 is a light, moderate cyan. Relative luminance 0.321; OKLCH L 67.9% C 0.115 H 234.2°. Best body text is #000000 at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#42A3D4
RGB	rgb(66, 163, 212)
HSL	hsl(200, 63%, 55%)
HSV	hsv(200, 69%, 83%)
CMYK	cmyk(68.9%, 23.1%, 0%, 16.9%)
CIE-LAB	lab(63.43, -12.78, -33.20)
CIE-LCH	lch(63.43, 35.57, 248.95°)
OKLab	oklab(67.91% -0.0673 -0.0933)
OKLCH	oklch(67.91% 0.115 234.2)
XYZ	xyz(27.2229, 32.1031, 67.0364)
Luminance	0.3211 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A3D4 #D47342

analogous

#42D4BC #42A3D4 #425AD4

triadic

#42A3D4 #D442A3 #A3D442

tetradic

#42A3D4 #BC42D4 #D47342 #5AD442

square

#42A3D4 #BC42D4 #D47342 #5AD442

split-complementary

#42A3D4 #D4425A #D4BC42

monochromatic

#1D5E7F #2883B1 #42A3D4 #74BBDF #A6D4EB

Accessibility & contrast

On white

2.83

#42A3D4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.42

#42A3D4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A3D4

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A3D4	#FFFFFF	#000000	##000000
##42A3D4	1.00	2.83	7.42	7.42
#FFFFFF	2.83	1.00	21.00	21.00
#000000	7.42	21.00	1.00	1.00
##000000	7.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8BA2D6

Deuteranopia (green-blind)

#7793D3

Tritanopia (blue-blind)

#00B0B3

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #42a3d4;
/* rgb */ color: rgb(66, 163, 212);
/* oklch */ color: oklch(67.9% 0.115 234.2);

Tailwind

colors: {
  custom: {
    50: '#87bee1',
    500: '#42a3d4',
    950: '#000000',
  },
}

SCSS

$custom: #42a3d4;
$custom-light: #87bee1;
$custom-dark: #000000;

JSON

{
  "hex": "#42a3d4",
  "rgb": {
    "r": 66,
    "g": 163,
    "b": 212
  },
  "hsl": {
    "h": 200.137,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.67907,
    "c": 0.11502,
    "h": 234.2
  },
  "luminance": 0.32106
}

Semantic roles & 50–950 ramp

primary

#42A3D4

secondary

#D8AF9A

accent

#7942E6

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A3D4

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

Preview Lab → · Contrast checker → · Palette generator →