#42BBD8#42BBD8

#42BBD8 is a light, moderate cyan. Relative luminance 0.417; OKLCH L 73.7% C 0.112 H 217.1°. Best body text is #000000 at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#42BBD8
RGB	rgb(66, 187, 216)
HSL	hsl(192, 66%, 55%)
HSV	hsv(192, 69%, 85%)
CMYK	cmyk(69.4%, 13.4%, 0%, 15.3%)
CIE-LAB	lab(70.63, -24.11, -24.30)
CIE-LCH	lch(70.63, 34.23, 225.23°)
OKLab	oklab(73.72% -0.0897 -0.0677)
OKLCH	oklch(73.72% 0.112 217.1)
XYZ	xyz(32.4066, 41.6531, 71.2844)
Luminance	0.4166 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BBD8 #D85F42

analogous

#42D8AA #42BBD8 #4270D8

triadic

#42BBD8 #D842BB #BBD842

tetradic

#42BBD8 #AA42D8 #D85F42 #70D842

square

#42BBD8 #AA42D8 #D85F42 #70D842

split-complementary

#42BBD8 #D84270 #D8AA42

monochromatic

#1B7084 #269BB7 #42BBD8 #75CDE2 #A7E0ED

Accessibility & contrast

On white

2.25

#42BBD8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.33

#42BBD8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BBD8

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BBD8	#FFFFFF	#000000	##000000
##42BBD8	1.00	2.25	9.33	9.33
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.33	21.00	1.00	1.00
##000000	9.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8B6DA

Deuteranopia (green-blind)

#93A6D8

Tritanopia (blue-blind)

#00C5C4

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #42bbd8;
/* rgb */ color: rgb(66, 187, 216);
/* oklch */ color: oklch(73.7% 0.112 217.1);

Tailwind

colors: {
  custom: {
    50: '#89cfe4',
    500: '#42bbd8',
    950: '#000000',
  },
}

SCSS

$custom: #42bbd8;
$custom-light: #89cfe4;
$custom-dark: #000000;

JSON

{
  "hex": "#42bbd8",
  "rgb": {
    "r": 66,
    "g": 187,
    "b": 216
  },
  "hsl": {
    "h": 191.6,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.7372,
    "c": 0.11238,
    "h": 217.1
  },
  "luminance": 0.41657
}

Semantic roles & 50–950 ramp

primary

#42BBD8

secondary

#DAA89C

accent

#603FE9

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BBD8

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

Preview Lab → · Contrast checker → · Palette generator →