#42B5BF#42B5BF

#42B5BF is a light, moderate teal. Relative luminance 0.380; OKLCH L 71.3% C 0.102 H 203.3°. Best body text is #000000 at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#42B5BF
RGB	rgb(66, 181, 191)
HSL	hsl(185, 49%, 50%)
HSV	hsv(185, 65%, 75%)
CMYK	cmyk(65.4%, 5.2%, 0%, 25.1%)
CIE-LAB	lab(67.99, -28.68, -14.58)
CIE-LCH	lch(67.99, 32.17, 206.95°)
OKLab	oklab(71.31% -0.0937 -0.0404)
OKLCH	oklch(71.31% 0.102 203.3)
XYZ	xyz(28.1706, 37.9645, 55.1233)
Luminance	0.3797 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B5BF #BF4C42

analogous

#42BF8A #42B5BF #4276BF

triadic

#42B5BF #BF42B5 #B5BF42

tetradic

#42B5BF #8A42BF #BF4C42 #76BF42

square

#42B5BF #8A42BF #BF4C42 #76BF42

split-complementary

#42B5BF #BF4276 #BF8A42

monochromatic

#225F65 #328B92 #42B5BF #70C7CE #9DD9DE

Accessibility & contrast

On white

2.44

#42B5BF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.59

#42B5BF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B5BF

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B5BF	#FFFFFF	#000000	##000000
##42B5BF	1.00	2.44	8.59	8.59
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.59	21.00	1.00	1.00
##000000	8.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7AEC0

Deuteranopia (green-blind)

#95A0BF

Tritanopia (blue-blind)

#00BCB8

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #42b5bf;
/* rgb */ color: rgb(66, 181, 191);
/* oklch */ color: oklch(71.3% 0.102 203.3);

Tailwind

colors: {
  custom: {
    50: '#86cbd2',
    500: '#42b5bf',
    950: '#000000',
  },
}

SCSS

$custom: #42b5bf;
$custom-light: #86cbd2;
$custom-dark: #000000;

JSON

{
  "hex": "#42b5bf",
  "rgb": {
    "r": 66,
    "g": 181,
    "b": 191
  },
  "hsl": {
    "h": 184.8,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.71313,
    "c": 0.10207,
    "h": 203.3
  },
  "luminance": 0.37968
}

Semantic roles & 50–950 ramp

primary

#42B5BF

secondary

#CA9793

accent

#5A4FD9

background

#F8FCFC

surface

#F0F8F9

border

#CBD1D2

text

#0C1314

muted

#7D8282

Preview Lab

Preview with #42B5BF

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

Preview Lab → · Contrast checker → · Palette generator →