#42BBD9#42BBD9

#42BBD9 is a light, moderate cyan. Relative luminance 0.417; OKLCH L 73.8% C 0.113 H 217.8°. Best body text is #000000 at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#42BBD9
RGB	rgb(66, 187, 217)
HSL	hsl(192, 67%, 55%)
HSV	hsv(192, 70%, 85%)
CMYK	cmyk(69.6%, 13.8%, 0%, 14.9%)
CIE-LAB	lab(70.67, -23.80, -24.79)
CIE-LCH	lch(70.67, 34.36, 226.17°)
OKLab	oklab(73.76% -0.0893 -0.0691)
OKLCH	oklch(73.76% 0.113 217.8)
XYZ	xyz(32.5363, 41.7049, 71.9673)
Luminance	0.4171 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BBD9 #D96042

analogous

#42D9AC #42BBD9 #426FD9

triadic

#42BBD9 #D942BB #BBD942

tetradic

#42BBD9 #AC42D9 #D96042 #6FD942

square

#42BBD9 #AC42D9 #D96042 #6FD942

split-complementary

#42BBD9 #D9426F #D9AC42

monochromatic

#1B7086 #259BB9 #42BBD9 #75CDE3 #A8E0ED

Accessibility & contrast

On white

2.25

#42BBD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.34

#42BBD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BBD9

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BBD9	#FFFFFF	#000000	##000000
##42BBD9	1.00	2.25	9.34	9.34
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.34	21.00	1.00	1.00
##000000	9.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8B6DB

Deuteranopia (green-blind)

#92A6D9

Tritanopia (blue-blind)

#00C5C4

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #42bbd9;
/* rgb */ color: rgb(66, 187, 217);
/* oklch */ color: oklch(73.8% 0.113 217.8);

Tailwind

colors: {
  custom: {
    50: '#89cfe4',
    500: '#42bbd9',
    950: '#000000',
  },
}

SCSS

$custom: #42bbd9;
$custom-light: #89cfe4;
$custom-dark: #000000;

JSON

{
  "hex": "#42bbd9",
  "rgb": {
    "r": 66,
    "g": 187,
    "b": 217
  },
  "hsl": {
    "h": 191.921,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.73761,
    "c": 0.11292,
    "h": 217.8
  },
  "luminance": 0.41709
}

Semantic roles & 50–950 ramp

primary

#42BBD9

secondary

#DBA89C

accent

#603EE9

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BBD9

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

Preview Lab → · Contrast checker → · Palette generator →