#42A3BC#42A3BC

#42A3BC is a light, moderate cyan. Relative luminance 0.310; OKLCH L 66.8% C 0.096 H 217.8°. Best body text is #000000 at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#42A3BC
RGB	rgb(66, 163, 188)
HSL	hsl(192, 48%, 50%)
HSV	hsv(192, 65%, 74%)
CMYK	cmyk(64.9%, 13.3%, 0%, 26.3%)
CIE-LAB	lab(62.49, -20.47, -21.26)
CIE-LCH	lch(62.49, 29.52, 226.08°)
OKLab	oklab(66.85% -0.0762 -0.0592)
OKLCH	oklch(66.85% 0.096 217.8)
XYZ	xyz(24.4173, 30.9809, 52.2603)
Luminance	0.3098 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A3BC #BC5B42

analogous

#42BC98 #42A3BC #4266BC

triadic

#42A3BC #BC42A3 #A3BC42

tetradic

#42A3BC #9842BC #BC5B42 #66BC42

square

#42A3BC #9842BC #BC5B42 #66BC42

split-complementary

#42A3BC #BC4266 #BC9842

monochromatic

#225461 #327C8F #42A3BC #6FB9CC #9CCFDC

Accessibility & contrast

On white

2.92

#42A3BC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.20

#42A3BC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A3BC

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A3BC	#FFFFFF	#000000	##000000
##42A3BC	1.00	2.92	7.20	7.20
#FFFFFF	2.92	1.00	21.00	21.00
#000000	7.20	21.00	1.00	1.00
##000000	7.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#939EBD

Deuteranopia (green-blind)

#8192BC

Tritanopia (blue-blind)

#00ACAB

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #42a3bc;
/* rgb */ color: rgb(66, 163, 188);
/* oklch */ color: oklch(66.8% 0.096 217.8);

Tailwind

colors: {
  custom: {
    50: '#84bed0',
    500: '#42a3bc',
    950: '#000000',
  },
}

SCSS

$custom: #42a3bc;
$custom-light: #84bed0;
$custom-dark: #000000;

JSON

{
  "hex": "#42a3bc",
  "rgb": {
    "r": 66,
    "g": 163,
    "b": 188
  },
  "hsl": {
    "h": 192.295,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.66849,
    "c": 0.09645,
    "h": 217.8
  },
  "luminance": 0.30983
}

Semantic roles & 50–950 ramp

primary

#42A3BC

secondary

#C99D91

accent

#6C50D8

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #42A3BC

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

Preview Lab → · Contrast checker → · Palette generator →