#42A3BA#42A3BA

#42A3BA is a light, moderate cyan. Relative luminance 0.309; OKLCH L 66.8% C 0.095 H 216.2°. Best body text is #000000 at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#42A3BA
RGB	rgb(66, 163, 186)
HSL	hsl(192, 48%, 49%)
HSV	hsv(192, 65%, 73%)
CMYK	cmyk(64.5%, 12.4%, 0%, 27.1%)
CIE-LAB	lab(62.42, -21.09, -20.25)
CIE-LCH	lch(62.42, 29.24, 223.83°)
OKLab	oklab(66.77% -0.077 -0.0563)
OKLCH	oklch(66.77% 0.095 216.2)
XYZ	xyz(24.2032, 30.8952, 51.1327)
Luminance	0.3090 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A3BA #BA5942

analogous

#42BA95 #42A3BA #4267BA

triadic

#42A3BA #BA42A3 #A3BA42

tetradic

#42A3BA #9542BA #BA5942 #67BA42

square

#42A3BA #9542BA #BA5942 #67BA42

split-complementary

#42A3BA #BA4267 #BA9542

monochromatic

#225460 #327B8D #42A3BA #6EB9CB #9BCFDB

Accessibility & contrast

On white

2.92

#42A3BA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.18

#42A3BA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A3BA

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A3BA	#FFFFFF	#000000	##000000
##42A3BA	1.00	2.92	7.18	7.18
#FFFFFF	2.92	1.00	21.00	21.00
#000000	7.18	21.00	1.00	1.00
##000000	7.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#939EBB

Deuteranopia (green-blind)

#8291BA

Tritanopia (blue-blind)

#00ABAA

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #42a3ba;
/* rgb */ color: rgb(66, 163, 186);
/* oklch */ color: oklch(66.8% 0.095 216.2);

Tailwind

colors: {
  custom: {
    50: '#84bece',
    500: '#42a3ba',
    950: '#000000',
  },
}

SCSS

$custom: #42a3ba;
$custom-light: #84bece;
$custom-dark: #000000;

JSON

{
  "hex": "#42a3ba",
  "rgb": {
    "r": 66,
    "g": 163,
    "b": 186
  },
  "hsl": {
    "h": 191.5,
    "s": 47.619,
    "l": 49.412
  },
  "oklch": {
    "l": 0.66767,
    "c": 0.09537,
    "h": 216.2
  },
  "luminance": 0.30898
}

Semantic roles & 50–950 ramp

primary

#42A3BA

secondary

#C89B90

accent

#6A51D7

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1213

muted

#7D8182

Preview Lab

Preview with #42A3BA

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

Preview Lab → · Contrast checker → · Palette generator →