#42A4CE#42A4CE

#42A4CE is a light, moderate cyan. Relative luminance 0.322; OKLCH L 67.9% C 0.109 H 229.9°. Best body text is #000000 at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#42A4CE
RGB	rgb(66, 164, 206)
HSL	hsl(198, 59%, 53%)
HSV	hsv(198, 68%, 81%)
CMYK	cmyk(68%, 20.4%, 0%, 19.2%)
CIE-LAB	lab(63.48, -15.28, -29.79)
CIE-LCH	lch(63.48, 33.48, 242.84°)
OKLab	oklab(67.86% -0.0704 -0.0835)
OKLCH	oklch(67.86% 0.109 229.9)
XYZ	xyz(26.6584, 32.1625, 63.1836)
Luminance	0.3216 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A4CE #CE6C42

analogous

#42CEB2 #42A4CE #425ECE

triadic

#42A4CE #CE42A4 #A4CE42

tetradic

#42A4CE #B242CE #CE6C42 #5ECE42

square

#42A4CE #B242CE #CE6C42 #5ECE42

split-complementary

#42A4CE #CE425E #CEB242

monochromatic

#1F5C77 #2B82A7 #42A4CE #73BBDB #A3D3E7

Accessibility & contrast

On white

2.83

#42A4CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.43

#42A4CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A4CE

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A4CE	#FFFFFF	#000000	##000000
##42A4CE	1.00	2.83	7.43	7.43
#FFFFFF	2.83	1.00	21.00	21.00
#000000	7.43	21.00	1.00	1.00
##000000	7.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FA2D0

Deuteranopia (green-blind)

#7B94CD

Tritanopia (blue-blind)

#00B0B2

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #42a4ce;
/* rgb */ color: rgb(66, 164, 206);
/* oklch */ color: oklch(67.9% 0.109 229.9);

Tailwind

colors: {
  custom: {
    50: '#86bfdd',
    500: '#42a4ce',
    950: '#000000',
  },
}

SCSS

$custom: #42a4ce;
$custom-light: #86bfdd;
$custom-dark: #000000;

JSON

{
  "hex": "#42a4ce",
  "rgb": {
    "r": 66,
    "g": 164,
    "b": 206
  },
  "hsl": {
    "h": 198,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.67865,
    "c": 0.1092,
    "h": 229.9
  },
  "luminance": 0.32165
}

Semantic roles & 50–950 ramp

primary

#42A4CE

secondary

#D4AA98

accent

#7546E2

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A4CE

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

Preview Lab → · Contrast checker → · Palette generator →