#42B5C8#42B5C8

#42B5C8 is a light, moderate teal. Relative luminance 0.384; OKLCH L 71.7% C 0.104 H 210.5°. Best body text is #000000 at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#42B5C8
RGB	rgb(66, 181, 200)
HSL	hsl(189, 55%, 52%)
HSV	hsv(189, 67%, 78%)
CMYK	cmyk(67%, 9.5%, 0%, 21.6%)
CIE-LAB	lab(68.29, -25.99, -19.09)
CIE-LCH	lch(68.29, 32.25, 216.29°)
OKLab	oklab(71.66% -0.09 -0.053)
OKLCH	oklch(71.66% 0.104 210.5)
XYZ	xyz(29.1916, 38.3729, 60.5006)
Luminance	0.3838 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B5C8 #C85542

analogous

#42C898 #42B5C8 #4272C8

triadic

#42B5C8 #C842B5 #B5C842

tetradic

#42B5C8 #9842C8 #C85542 #72C842

square

#42B5C8 #9842C8 #C85542 #72C842

split-complementary

#42B5C8 #C84272 #C89842

monochromatic

#20646F #2E8F9F #42B5C8 #71C8D6 #A1DAE4

Accessibility & contrast

On white

2.42

#42B5C8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.68

#42B5C8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B5C8

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B5C8	#FFFFFF	#000000	##000000
##42B5C8	1.00	2.42	8.68	8.68
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.68	21.00	1.00	1.00
##000000	8.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5AFC9

Deuteranopia (green-blind)

#92A0C8

Tritanopia (blue-blind)

#00BDBB

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #42b5c8;
/* rgb */ color: rgb(66, 181, 200);
/* oklch */ color: oklch(71.7% 0.104 210.5);

Tailwind

colors: {
  custom: {
    50: '#87cbd8',
    500: '#42b5c8',
    950: '#000000',
  },
}

SCSS

$custom: #42b5c8;
$custom-light: #87cbd8;
$custom-dark: #000000;

JSON

{
  "hex": "#42b5c8",
  "rgb": {
    "r": 66,
    "g": 181,
    "b": 200
  },
  "hsl": {
    "h": 188.507,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.71655,
    "c": 0.10446,
    "h": 210.5
  },
  "luminance": 0.38376
}

Semantic roles & 50–950 ramp

primary

#42B5C8

secondary

#D09E96

accent

#5F4ADE

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0D1314

muted

#7D8283

Preview Lab

Preview with #42B5C8

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

Preview Lab → · Contrast checker → · Palette generator →