#42B8BB#42B8BB

#42B8BB is a light, moderate teal. Relative luminance 0.390; OKLCH L 71.9% C 0.103 H 197.5°. Best body text is #000000 at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#42B8BB
RGB	rgb(66, 184, 187)
HSL	hsl(181, 48%, 50%)
HSV	hsv(181, 65%, 73%)
CMYK	cmyk(64.7%, 1.6%, 0%, 26.7%)
CIE-LAB	lab(68.77, -31.30, -11.22)
CIE-LCH	lch(68.77, 33.25, 199.72°)
OKLab	oklab(71.9% -0.0985 -0.0311)
OKLCH	oklch(71.9% 0.103 197.5)
XYZ	xyz(28.3530, 39.0240, 53.0422)
Luminance	0.3903 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B8BB #BB4542

analogous

#42BB82 #42B8BB #427BBB

triadic

#42B8BB #BB42B8 #B8BB42

tetradic

#42B8BB #8242BB #BB4542 #7BBB42

square

#42B8BB #8242BB #BB4542 #7BBB42

split-complementary

#42B8BB #BB427B #BB8242

monochromatic

#225F61 #328B8E #42B8BB #6ECACC #9CDADC

Accessibility & contrast

On white

2.38

#42B8BB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.81

#42B8BB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B8BB

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B8BB	#FFFFFF	#000000	##000000
##42B8BB	1.00	2.38	8.81	8.81
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.81	21.00	1.00	1.00
##000000	8.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACB0BB

Deuteranopia (green-blind)

#99A2BC

Tritanopia (blue-blind)

#00BEB9

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #42b8bb;
/* rgb */ color: rgb(66, 184, 187);
/* oklch */ color: oklch(71.9% 0.103 197.5);

Tailwind

colors: {
  custom: {
    50: '#86cdcf',
    500: '#42b8bb',
    950: '#000000',
  },
}

SCSS

$custom: #42b8bb;
$custom-light: #86cdcf;
$custom-dark: #000000;

JSON

{
  "hex": "#42b8bb",
  "rgb": {
    "r": 66,
    "g": 184,
    "b": 187
  },
  "hsl": {
    "h": 181.488,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.71897,
    "c": 0.10332,
    "h": 197.5
  },
  "luminance": 0.39027
}

Semantic roles & 50–950 ramp

primary

#42B8BB

secondary

#C89291

accent

#5450D7

background

#F8FCFC

surface

#F0F9F9

border

#CBD2D2

text

#0C1313

muted

#7D8282

Preview Lab

Preview with #42B8BB

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

Preview Lab → · Contrast checker → · Palette generator →