#42A9CE#42A9CE

#42A9CE is a light, moderate cyan. Relative luminance 0.340; OKLCH L 69.0% C 0.108 H 225.6°. Best body text is #000000 at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#42A9CE
RGB	rgb(66, 169, 206)
HSL	hsl(196, 59%, 53%)
HSV	hsv(196, 68%, 81%)
CMYK	cmyk(68%, 18%, 0%, 19.2%)
CIE-LAB	lab(64.95, -17.95, -27.51)
CIE-LCH	lch(64.95, 32.85, 236.88°)
OKLab	oklab(69.04% -0.0755 -0.0769)
OKLCH	oklch(69.04% 0.108 225.6)
XYZ	xyz(27.5708, 33.9874, 63.4877)
Luminance	0.3399 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A9CE #CE6742

analogous

#42CEAD #42A9CE #4263CE

triadic

#42A9CE #CE42A9 #A9CE42

tetradic

#42A9CE #AD42CE #CE6742 #63CE42

square

#42A9CE #AD42CE #CE6742 #63CE42

split-complementary

#42A9CE #CE4263 #CEAD42

monochromatic

#1F6077 #2B87A7 #42A9CE #73BFDB #A3D5E7

Accessibility & contrast

On white

2.69

#42A9CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.80

#42A9CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A9CE

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A9CE	#FFFFFF	#000000	##000000
##42A9CE	1.00	2.69	7.80	7.80
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.80	21.00	1.00	1.00
##000000	7.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A6D0

Deuteranopia (green-blind)

#8197CE

Tritanopia (blue-blind)

#00B4B5

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #42a9ce;
/* rgb */ color: rgb(66, 169, 206);
/* oklch */ color: oklch(69.0% 0.108 225.6);

Tailwind

colors: {
  custom: {
    50: '#87c2dd',
    500: '#42a9ce',
    950: '#000000',
  },
}

SCSS

$custom: #42a9ce;
$custom-light: #87c2dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42a9ce",
  "rgb": {
    "r": 66,
    "g": 169,
    "b": 206
  },
  "hsl": {
    "h": 195.857,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.69044,
    "c": 0.10777,
    "h": 225.6
  },
  "luminance": 0.3399
}

Semantic roles & 50–950 ramp

primary

#42A9CE

secondary

#D4A898

accent

#6F46E2

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A9CE

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

Preview Lab → · Contrast checker → · Palette generator →