#42A5D2#42A5D2

#42A5D2 is a light, moderate cyan. Relative luminance 0.327; OKLCH L 68.3% C 0.112 H 231.5°. Best body text is #000000 at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#42A5D2
RGB	rgb(66, 165, 210)
HSL	hsl(199, 62%, 54%)
HSV	hsv(199, 69%, 82%)
CMYK	cmyk(68.6%, 21.4%, 0%, 17.6%)
CIE-LAB	lab(63.93, -14.52, -31.31)
CIE-LCH	lch(63.93, 34.51, 245.12°)
OKLab	oklab(68.28% -0.07 -0.0878)
OKLCH	oklch(68.28% 0.112 231.5)
XYZ	xyz(27.3301, 32.7186, 65.8352)
Luminance	0.3272 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A5D2 #D26F42

analogous

#42D2B7 #42A5D2 #425DD2

triadic

#42A5D2 #D242A5 #A5D242

tetradic

#42A5D2 #B742D2 #D26F42 #5DD242

square

#42A5D2 #B742D2 #D26F42 #5DD242

split-complementary

#42A5D2 #D2425D #D2B742

monochromatic

#1E5F7C #2984AD #42A5D2 #73BDDE #A5D4EA

Accessibility & contrast

On white

2.78

#42A5D2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.54

#42A5D2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A5D2

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A5D2	#FFFFFF	#000000	##000000
##42A5D2	1.00	2.78	7.54	7.54
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.54	21.00	1.00	1.00
##000000	7.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA3D4

Deuteranopia (green-blind)

#7B95D1

Tritanopia (blue-blind)

#00B1B4

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #42a5d2;
/* rgb */ color: rgb(66, 165, 210);
/* oklch */ color: oklch(68.3% 0.112 231.5);

Tailwind

colors: {
  custom: {
    50: '#87bfe0',
    500: '#42a5d2',
    950: '#000000',
  },
}

SCSS

$custom: #42a5d2;
$custom-light: #87bfe0;
$custom-dark: #000000;

JSON

{
  "hex": "#42a5d2",
  "rgb": {
    "r": 66,
    "g": 165,
    "b": 210
  },
  "hsl": {
    "h": 198.75,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.68282,
    "c": 0.11229,
    "h": 231.5
  },
  "luminance": 0.32722
}

Semantic roles & 50–950 ramp

primary

#42A5D2

secondary

#D7AC99

accent

#7643E5

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A5D2

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

Preview Lab → · Contrast checker → · Palette generator →