#42A3BD#42A3BD

#42A3BD is a light, moderate cyan. Relative luminance 0.310; OKLCH L 66.9% C 0.097 H 218.6°. Best body text is #000000 at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#42A3BD
RGB	rgb(66, 163, 189)
HSL	hsl(193, 48%, 50%)
HSV	hsv(193, 65%, 74%)
CMYK	cmyk(65.1%, 13.8%, 0%, 25.9%)
CIE-LAB	lab(62.53, -20.16, -21.77)
CIE-LCH	lch(62.53, 29.67, 227.19°)
OKLab	oklab(66.89% -0.0758 -0.0606)
OKLCH	oklch(66.89% 0.097 218.6)
XYZ	xyz(24.5255, 31.0241, 52.8300)
Luminance	0.3103 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A3BD #BD5C42

analogous

#42BD99 #42A3BD #4266BD

triadic

#42A3BD #BD42A3 #A3BD42

tetradic

#42A3BD #9942BD #BD5C42 #66BD42

square

#42A3BD #9942BD #BD5C42 #66BD42

split-complementary

#42A3BD #BD4266 #BD9942

monochromatic

#225562 #327C90 #42A3BD #6FB9CD #9DCFDD

Accessibility & contrast

On white

2.91

#42A3BD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.21

#42A3BD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A3BD

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A3BD	#FFFFFF	#000000	##000000
##42A3BD	1.00	2.91	7.21	7.21
#FFFFFF	2.91	1.00	21.00	21.00
#000000	7.21	21.00	1.00	1.00
##000000	7.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#929FBE

Deuteranopia (green-blind)

#8192BD

Tritanopia (blue-blind)

#00ACAB

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #42a3bd;
/* rgb */ color: rgb(66, 163, 189);
/* oklch */ color: oklch(66.9% 0.097 218.6);

Tailwind

colors: {
  custom: {
    50: '#84bed1',
    500: '#42a3bd',
    950: '#000000',
  },
}

SCSS

$custom: #42a3bd;
$custom-light: #84bed1;
$custom-dark: #000000;

JSON

{
  "hex": "#42a3bd",
  "rgb": {
    "r": 66,
    "g": 163,
    "b": 189
  },
  "hsl": {
    "h": 192.683,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.6689,
    "c": 0.09703,
    "h": 218.6
  },
  "luminance": 0.31027
}

Semantic roles & 50–950 ramp

primary

#42A3BD

secondary

#C99D92

accent

#6D50D8

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #42A3BD

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

Preview Lab → · Contrast checker → · Palette generator →