#42B5CB#42B5CB

#42B5CB is a light, moderate teal. Relative luminance 0.385; OKLCH L 71.8% C 0.106 H 212.8°. Best body text is #000000 at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#42B5CB
RGB	rgb(66, 181, 203)
HSL	hsl(190, 57%, 53%)
HSV	hsv(190, 67%, 80%)
CMYK	cmyk(67.5%, 10.8%, 0%, 20.4%)
CIE-LAB	lab(68.40, -25.08, -20.58)
CIE-LCH	lch(68.40, 32.44, 219.37°)
OKLab	oklab(71.77% -0.0888 -0.0572)
OKLCH	oklch(71.77% 0.106 212.8)
XYZ	xyz(29.5456, 38.5145, 62.3653)
Luminance	0.3852 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B5CB #CB5842

analogous

#42CB9C #42B5CB #4270CB

triadic

#42B5CB #CB42B5 #B5CB42

tetradic

#42B5CB #9C42CB #CB5842 #70CB42

square

#42B5CB #9C42CB #CB5842 #70CB42

split-complementary

#42B5CB #CB4270 #CB9C42

monochromatic

#206673 #2D90A3 #42B5CB #72C8D8 #A2DBE5

Accessibility & contrast

On white

2.41

#42B5CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.70

#42B5CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B5CB

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B5CB	#FFFFFF	#000000	##000000
##42B5CB	1.00	2.41	8.70	8.70
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.70	21.00	1.00	1.00
##000000	8.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4AFCC

Deuteranopia (green-blind)

#91A1CB

Tritanopia (blue-blind)

#00BEBC

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #42b5cb;
/* rgb */ color: rgb(66, 181, 203);
/* oklch */ color: oklch(71.8% 0.106 212.8);

Tailwind

colors: {
  custom: {
    50: '#87cbda',
    500: '#42b5cb',
    950: '#000000',
  },
}

SCSS

$custom: #42b5cb;
$custom-light: #87cbda;
$custom-dark: #000000;

JSON

{
  "hex": "#42b5cb",
  "rgb": {
    "r": 66,
    "g": 181,
    "b": 203
  },
  "hsl": {
    "h": 189.635,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.71772,
    "c": 0.10564,
    "h": 212.8
  },
  "luminance": 0.38518
}

Semantic roles & 50–950 ramp

primary

#42B5CB

secondary

#D2A097

accent

#6048E0

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #42B5CB

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

Preview Lab → · Contrast checker → · Palette generator →