#42A4CD#42A4CD

#42A4CD is a light, moderate cyan. Relative luminance 0.321; OKLCH L 67.8% C 0.108 H 229.2°. Best body text is #000000 at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#42A4CD
RGB	rgb(66, 164, 205)
HSL	hsl(198, 58%, 53%)
HSV	hsv(198, 68%, 80%)
CMYK	cmyk(67.8%, 20%, 0%, 19.6%)
CIE-LAB	lab(63.44, -15.61, -29.30)
CIE-LCH	lch(63.44, 33.19, 241.96°)
OKLab	oklab(67.82% -0.0708 -0.0821)
OKLCH	oklch(67.82% 0.108 229.2)
XYZ	xyz(26.5373, 32.1140, 62.5458)
Luminance	0.3212 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A4CD #CD6B42

analogous

#42CDB0 #42A4CD #425ECD

triadic

#42A4CD #CD42A4 #A4CD42

tetradic

#42A4CD #B042CD #CD6B42 #5ECD42

square

#42A4CD #B042CD #CD6B42 #5ECD42

split-complementary

#42A4CD #CD425E #CDB042

monochromatic

#1F5C76 #2C82A6 #42A4CD #72BBDA #A3D3E7

Accessibility & contrast

On white

2.83

#42A4CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.42

#42A4CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A4CD

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A4CD	#FFFFFF	#000000	##000000
##42A4CD	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)

#8FA1CF

Deuteranopia (green-blind)

#7C93CC

Tritanopia (blue-blind)

#00AFB2

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #42a4cd;
/* rgb */ color: rgb(66, 164, 205);
/* oklch */ color: oklch(67.8% 0.108 229.2);

Tailwind

colors: {
  custom: {
    50: '#86bfdc',
    500: '#42a4cd',
    950: '#000000',
  },
}

SCSS

$custom: #42a4cd;
$custom-light: #86bfdc;
$custom-dark: #000000;

JSON

{
  "hex": "#42a4cd",
  "rgb": {
    "r": 66,
    "g": 164,
    "b": 205
  },
  "hsl": {
    "h": 197.698,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.6782,
    "c": 0.10836,
    "h": 229.2
  },
  "luminance": 0.32117
}

Semantic roles & 50–950 ramp

primary

#42A4CD

secondary

#D3A997

accent

#7446E1

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A4CD

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

Preview Lab → · Contrast checker → · Palette generator →