#42AACC#42AACC

#42AACC is a light, moderate cyan. Relative luminance 0.343; OKLCH L 69.2% C 0.106 H 223.3°. Best body text is #000000 at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#42AACC
RGB	rgb(66, 170, 204)
HSL	hsl(195, 58%, 53%)
HSV	hsv(195, 68%, 80%)
CMYK	cmyk(67.6%, 16.7%, 0%, 20%)
CIE-LAB	lab(65.17, -19.11, -26.07)
CIE-LCH	lch(65.17, 32.32, 233.75°)
OKLab	oklab(69.19% -0.0772 -0.0728)
OKLCH	oklch(69.19% 0.106 223.3)
XYZ	xyz(27.5161, 34.2643, 62.2785)
Luminance	0.3427 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42AACC #CC6442

analogous

#42CCA9 #42AACC #4265CC

triadic

#42AACC #CC42AA #AACC42

tetradic

#42AACC #A942CC #CC6442 #65CC42

square

#42AACC #A942CC #CC6442 #65CC42

split-complementary

#42AACC #CC4265 #CCA942

monochromatic

#1F5F74 #2C87A4 #42AACC #72C0D9 #A2D5E6

Accessibility & contrast

On white

2.67

#42AACC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.85

#42AACC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42AACC

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42AACC	#FFFFFF	#000000	##000000
##42AACC	1.00	2.67	7.85	7.85
#FFFFFF	2.67	1.00	21.00	21.00
#000000	7.85	21.00	1.00	1.00
##000000	7.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97A6CE

Deuteranopia (green-blind)

#8398CC

Tritanopia (blue-blind)

#00B4B5

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #42aacc;
/* rgb */ color: rgb(66, 170, 204);
/* oklch */ color: oklch(69.2% 0.106 223.3);

Tailwind

colors: {
  custom: {
    50: '#86c3db',
    500: '#42aacc',
    950: '#000000',
  },
}

SCSS

$custom: #42aacc;
$custom-light: #86c3db;
$custom-dark: #000000;

JSON

{
  "hex": "#42aacc",
  "rgb": {
    "r": 66,
    "g": 170,
    "b": 204
  },
  "hsl": {
    "h": 194.783,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.69194,
    "c": 0.10613,
    "h": 223.3
  },
  "luminance": 0.34267
}

Semantic roles & 50–950 ramp

primary

#42AACC

secondary

#D3A697

accent

#6D47E1

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42AACC

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

Preview Lab → · Contrast checker → · Palette generator →