#42B9D7#42B9D7

#42B9D7 is a light, moderate cyan. Relative luminance 0.408; OKLCH L 73.2% C 0.112 H 218.0°. Best body text is #000000 at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#42B9D7
RGB	rgb(66, 185, 215)
HSL	hsl(192, 65%, 55%)
HSV	hsv(192, 69%, 84%)
CMYK	cmyk(69.3%, 14%, 0%, 15.7%)
CIE-LAB	lab(70.01, -23.40, -24.71)
CIE-LCH	lch(70.01, 34.03, 226.55°)
OKLab	oklab(73.21% -0.0881 -0.0689)
OKLCH	oklch(73.21% 0.112 218)
XYZ	xyz(31.8564, 40.7589, 70.4651)
Luminance	0.4076 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B9D7 #D76042

analogous

#42D7AB #42B9D7 #426ED7

triadic

#42B9D7 #D742B9 #B9D742

tetradic

#42B9D7 #AB42D7 #D76042 #6ED742

square

#42B9D7 #AB42D7 #D76042 #6ED742

split-complementary

#42B9D7 #D7426E #D7AB42

monochromatic

#1C6E83 #2699B5 #42B9D7 #75CCE2 #A7DEEC

Accessibility & contrast

On white

2.29

#42B9D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.15

#42B9D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B9D7

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B9D7	#FFFFFF	#000000	##000000
##42B9D7	1.00	2.29	9.15	9.15
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.15	21.00	1.00	1.00
##000000	9.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B4D9

Deuteranopia (green-blind)

#91A4D7

Tritanopia (blue-blind)

#00C3C2

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #42b9d7;
/* rgb */ color: rgb(66, 185, 215);
/* oklch */ color: oklch(73.2% 0.112 218.0);

Tailwind

colors: {
  custom: {
    50: '#89cee3',
    500: '#42b9d7',
    950: '#000000',
  },
}

SCSS

$custom: #42b9d7;
$custom-light: #89cee3;
$custom-dark: #000000;

JSON

{
  "hex": "#42b9d7",
  "rgb": {
    "r": 66,
    "g": 185,
    "b": 215
  },
  "hsl": {
    "h": 192.081,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.73207,
    "c": 0.11183,
    "h": 218
  },
  "luminance": 0.40762
}

Semantic roles & 50–950 ramp

primary

#42B9D7

secondary

#DAA89B

accent

#6240E8

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B9D7

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

Preview Lab → · Contrast checker → · Palette generator →