#42B5BB#42B5BB

#42B5BB is a light, moderate teal. Relative luminance 0.378; OKLCH L 71.2% C 0.102 H 200.1°. Best body text is #000000 at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#42B5BB
RGB	rgb(66, 181, 187)
HSL	hsl(183, 48%, 50%)
HSV	hsv(183, 65%, 73%)
CMYK	cmyk(64.7%, 3.2%, 0%, 26.7%)
CIE-LAB	lab(67.87, -29.85, -12.57)
CIE-LCH	lch(67.87, 32.38, 202.84°)
OKLab	oklab(71.17% -0.0954 -0.0348)
OKLCH	oklch(71.17% 0.102 200.1)
XYZ	xyz(27.7364, 37.7908, 52.8367)
Luminance	0.3779 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B5BB #BB4842

analogous

#42BB84 #42B5BB #4279BB

triadic

#42B5BB #BB42B5 #B5BB42

tetradic

#42B5BB #8442BB #BB4842 #79BB42

square

#42B5BB #8442BB #BB4842 #79BB42

split-complementary

#42B5BB #BB4279 #BB8442

monochromatic

#225D61 #32898E #42B5BB #6EC7CC #9CD9DC

Accessibility & contrast

On white

2.45

#42B5BB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.56

#42B5BB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B5BB

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B5BB	#FFFFFF	#000000	##000000
##42B5BB	1.00	2.45	8.56	8.56
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.56	21.00	1.00	1.00
##000000	8.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8ADBC

Deuteranopia (green-blind)

#96A0BC

Tritanopia (blue-blind)

#00BBB7

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b5bb;
/* rgb */ color: rgb(66, 181, 187);
/* oklch */ color: oklch(71.2% 0.102 200.1);

Tailwind

colors: {
  custom: {
    50: '#86cbcf',
    500: '#42b5bb',
    950: '#000000',
  },
}

SCSS

$custom: #42b5bb;
$custom-light: #86cbcf;
$custom-dark: #000000;

JSON

{
  "hex": "#42b5bb",
  "rgb": {
    "r": 66,
    "g": 181,
    "b": 187
  },
  "hsl": {
    "h": 182.975,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.71167,
    "c": 0.10158,
    "h": 200.1
  },
  "luminance": 0.37794
}

Semantic roles & 50–950 ramp

primary

#42B5BB

secondary

#C89391

accent

#5750D7

background

#F8FCFC

surface

#F0F8F9

border

#CBD1D2

text

#0C1313

muted

#7D8282

Preview Lab

Preview with #42B5BB

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

Preview Lab → · Contrast checker → · Palette generator →