#42A4D2#42A4D2

#42A4D2 is a light, moderate cyan. Relative luminance 0.324; OKLCH L 68.0% C 0.113 H 232.3°. Best body text is #000000 at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#42A4D2
RGB	rgb(66, 164, 210)
HSL	hsl(199, 62%, 54%)
HSV	hsv(199, 69%, 82%)
CMYK	cmyk(68.6%, 21.9%, 0%, 17.6%)
CIE-LAB	lab(63.64, -13.98, -31.76)
CIE-LCH	lch(63.64, 34.70, 246.25°)
OKLab	oklab(68.05% -0.069 -0.0891)
OKLCH	oklch(68.05% 0.113 232.3)
XYZ	xyz(27.1505, 32.3593, 65.7754)
Luminance	0.3236 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A4D2 #D27042

analogous

#42D2B8 #42A4D2 #425CD2

triadic

#42A4D2 #D242A4 #A4D242

tetradic

#42A4D2 #B842D2 #D27042 #5CD242

square

#42A4D2 #B842D2 #D27042 #5CD242

split-complementary

#42A4D2 #D2425C #D2B842

monochromatic

#1E5E7C #2983AD #42A4D2 #73BCDE #A5D4EA

Accessibility & contrast

On white

2.81

#42A4D2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.47

#42A4D2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A4D2

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A4D2	#FFFFFF	#000000	##000000
##42A4D2	1.00	2.81	7.47	7.47
#FFFFFF	2.81	1.00	21.00	21.00
#000000	7.47	21.00	1.00	1.00
##000000	7.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DA2D4

Deuteranopia (green-blind)

#7994D1

Tritanopia (blue-blind)

#00B0B3

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #42a4d2;
/* rgb */ color: rgb(66, 164, 210);
/* oklch */ color: oklch(68.0% 0.113 232.3);

Tailwind

colors: {
  custom: {
    50: '#87bfe0',
    500: '#42a4d2',
    950: '#000000',
  },
}

SCSS

$custom: #42a4d2;
$custom-light: #87bfe0;
$custom-dark: #000000;

JSON

{
  "hex": "#42a4d2",
  "rgb": {
    "r": 66,
    "g": 164,
    "b": 210
  },
  "hsl": {
    "h": 199.167,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.68048,
    "c": 0.11271,
    "h": 232.3
  },
  "luminance": 0.32362
}

Semantic roles & 50–950 ramp

primary

#42A4D2

secondary

#D7AD99

accent

#7743E5

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A4D2

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

Preview Lab → · Contrast checker → · Palette generator →