#42A5D4#42A5D4

#42A5D4 is a light, moderate cyan. Relative luminance 0.328; OKLCH L 68.4% C 0.114 H 232.6°. Best body text is #000000 at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#42A5D4
RGB	rgb(66, 165, 212)
HSL	hsl(199, 63%, 55%)
HSV	hsv(199, 69%, 83%)
CMYK	cmyk(68.9%, 22.2%, 0%, 16.9%)
CIE-LAB	lab(64.01, -13.86, -32.29)
CIE-LCH	lch(64.01, 35.14, 246.76°)
OKLab	oklab(68.37% -0.0693 -0.0906)
OKLCH	oklch(68.37% 0.114 232.6)
XYZ	xyz(27.5809, 32.8189, 67.1557)
Luminance	0.3282 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A5D4 #D47142

analogous

#42D4BA #42A5D4 #425CD4

triadic

#42A5D4 #D442A5 #A5D442

tetradic

#42A5D4 #BA42D4 #D47142 #5CD442

square

#42A5D4 #BA42D4 #D47142 #5CD442

split-complementary

#42A5D4 #D4425C #D4BA42

monochromatic

#1D5F7F #2885B1 #42A5D4 #74BDDF #A6D4EB

Accessibility & contrast

On white

2.78

#42A5D4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.56

#42A5D4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A5D4

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A5D4	#FFFFFF	#000000	##000000
##42A5D4	1.00	2.78	7.56	7.56
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.56	21.00	1.00	1.00
##000000	7.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA3D6

Deuteranopia (green-blind)

#7A95D3

Tritanopia (blue-blind)

#00B2B5

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #42a5d4;
/* rgb */ color: rgb(66, 165, 212);
/* oklch */ color: oklch(68.4% 0.114 232.6);

Tailwind

colors: {
  custom: {
    50: '#87bfe1',
    500: '#42a5d4',
    950: '#000000',
  },
}

SCSS

$custom: #42a5d4;
$custom-light: #87bfe1;
$custom-dark: #000000;

JSON

{
  "hex": "#42a5d4",
  "rgb": {
    "r": 66,
    "g": 165,
    "b": 212
  },
  "hsl": {
    "h": 199.315,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.68374,
    "c": 0.11409,
    "h": 232.6
  },
  "luminance": 0.32822
}

Semantic roles & 50–950 ramp

primary

#42A5D4

secondary

#D8AE9A

accent

#7742E6

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A5D4

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

Preview Lab → · Contrast checker → · Palette generator →