#42A7CC#42A7CC

#42A7CC is a light, moderate cyan. Relative luminance 0.332; OKLCH L 68.5% C 0.107 H 226.0°. Best body text is #000000 at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#42A7CC
RGB	rgb(66, 167, 204)
HSL	hsl(196, 58%, 53%)
HSV	hsv(196, 68%, 80%)
CMYK	cmyk(67.6%, 18.1%, 0%, 20%)
CIE-LAB	lab(64.28, -17.53, -27.43)
CIE-LCH	lch(64.28, 32.56, 237.42°)
OKLab	oklab(68.48% -0.0742 -0.0767)
OKLCH	oklch(68.48% 0.107 226)
XYZ	xyz(26.9602, 33.1524, 62.0932)
Luminance	0.3316 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A7CC #CC6742

analogous

#42CCAC #42A7CC #4262CC

triadic

#42A7CC #CC42A7 #A7CC42

tetradic

#42A7CC #AC42CC #CC6742 #62CC42

square

#42A7CC #AC42CC #CC6742 #62CC42

split-complementary

#42A7CC #CC4262 #CCAC42

monochromatic

#1F5D74 #2C84A4 #42A7CC #72BDD9 #A2D4E6

Accessibility & contrast

On white

2.75

#42A7CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.63

#42A7CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A7CC

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A7CC	#FFFFFF	#000000	##000000
##42A7CC	1.00	2.75	7.63	7.63
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.63	21.00	1.00	1.00
##000000	7.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93A4CE

Deuteranopia (green-blind)

#8096CC

Tritanopia (blue-blind)

#00B2B3

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #42a7cc;
/* rgb */ color: rgb(66, 167, 204);
/* oklch */ color: oklch(68.5% 0.107 226.0);

Tailwind

colors: {
  custom: {
    50: '#86c1db',
    500: '#42a7cc',
    950: '#000000',
  },
}

SCSS

$custom: #42a7cc;
$custom-light: #86c1db;
$custom-dark: #000000;

JSON

{
  "hex": "#42a7cc",
  "rgb": {
    "r": 66,
    "g": 167,
    "b": 204
  },
  "hsl": {
    "h": 196.087,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.68484,
    "c": 0.1067,
    "h": 226
  },
  "luminance": 0.33155
}

Semantic roles & 50–950 ramp

primary

#42A7CC

secondary

#D3A797

accent

#7047E1

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A7CC

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

Preview Lab → · Contrast checker → · Palette generator →