#42A9CF#42A9CF

#42A9CF is a light, moderate cyan. Relative luminance 0.340; OKLCH L 69.1% C 0.109 H 226.2°. Best body text is #000000 at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#42A9CF
RGB	rgb(66, 169, 207)
HSL	hsl(196, 59%, 54%)
HSV	hsv(196, 68%, 81%)
CMYK	cmyk(68.1%, 18.4%, 0%, 18.8%)
CIE-LAB	lab(64.99, -17.63, -28.01)
CIE-LCH	lch(64.99, 33.09, 237.81°)
OKLab	oklab(69.09% -0.0751 -0.0783)
OKLCH	oklch(69.09% 0.109 226.2)
XYZ	xyz(27.6927, 34.0361, 64.1295)
Luminance	0.3404 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A9CF #CF6842

analogous

#42CFAE #42A9CF #4262CF

triadic

#42A9CF #CF42A9 #A9CF42

tetradic

#42A9CF #AE42CF #CF6842 #62CF42

square

#42A9CF #AE42CF #CF6842 #62CF42

split-complementary

#42A9CF #CF4262 #CFAE42

monochromatic

#1F6078 #2B87A9 #42A9CF #73BFDB #A4D5E8

Accessibility & contrast

On white

2.69

#42A9CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.81

#42A9CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A9CF

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A9CF	#FFFFFF	#000000	##000000
##42A9CF	1.00	2.69	7.81	7.81
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.81	21.00	1.00	1.00
##000000	7.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94A6D1

Deuteranopia (green-blind)

#8197CF

Tritanopia (blue-blind)

#00B4B5

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #42a9cf;
/* rgb */ color: rgb(66, 169, 207);
/* oklch */ color: oklch(69.1% 0.109 226.2);

Tailwind

colors: {
  custom: {
    50: '#87c2dd',
    500: '#42a9cf',
    950: '#000000',
  },
}

SCSS

$custom: #42a9cf;
$custom-light: #87c2dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42a9cf",
  "rgb": {
    "r": 66,
    "g": 169,
    "b": 207
  },
  "hsl": {
    "h": 196.17,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.69088,
    "c": 0.10852,
    "h": 226.2
  },
  "luminance": 0.34039
}

Semantic roles & 50–950 ramp

primary

#42A9CF

secondary

#D5A898

accent

#7045E3

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A9CF

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

Preview Lab → · Contrast checker → · Palette generator →