#42BCD8#42BCD8

#42BCD8 is a light, moderate cyan. Relative luminance 0.421; OKLCH L 74.0% C 0.112 H 216.2°. Best body text is #000000 at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#42BCD8
RGB	rgb(66, 188, 216)
HSL	hsl(191, 66%, 55%)
HSV	hsv(191, 69%, 85%)
CMYK	cmyk(69.4%, 13%, 0%, 15.3%)
CIE-LAB	lab(70.93, -24.61, -23.85)
CIE-LCH	lch(70.93, 34.27, 224.10°)
OKLab	oklab(73.96% -0.0907 -0.0665)
OKLCH	oklch(73.96% 0.112 216.2)
XYZ	xyz(32.6195, 42.0788, 71.3553)
Luminance	0.4208 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BCD8 #D85E42

analogous

#42D8A9 #42BCD8 #4271D8

triadic

#42BCD8 #D842BC #BCD842

tetradic

#42BCD8 #A942D8 #D85E42 #71D842

square

#42BCD8 #A942D8 #D85E42 #71D842

split-complementary

#42BCD8 #D84271 #D8A942

monochromatic

#1B7184 #269CB7 #42BCD8 #75CEE2 #A7E0ED

Accessibility & contrast

On white

2.23

#42BCD8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.42

#42BCD8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BCD8

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BCD8	#FFFFFF	#000000	##000000
##42BCD8	1.00	2.23	9.42	9.42
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.42	21.00	1.00	1.00
##000000	9.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B6DA

Deuteranopia (green-blind)

#94A7D8

Tritanopia (blue-blind)

#00C6C5

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #42bcd8;
/* rgb */ color: rgb(66, 188, 216);
/* oklch */ color: oklch(74.0% 0.112 216.2);

Tailwind

colors: {
  custom: {
    50: '#89d0e4',
    500: '#42bcd8',
    950: '#000000',
  },
}

SCSS

$custom: #42bcd8;
$custom-light: #89d0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#42bcd8",
  "rgb": {
    "r": 66,
    "g": 188,
    "b": 216
  },
  "hsl": {
    "h": 191.2,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.73957,
    "c": 0.11241,
    "h": 216.2
  },
  "luminance": 0.42083
}

Semantic roles & 50–950 ramp

primary

#42BCD8

secondary

#DAA79C

accent

#5F3FE9

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #42BCD8

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

Preview Lab → · Contrast checker → · Palette generator →