#42C5CB#42C5CB

#42C5CB is a light, moderate teal. Relative luminance 0.454; OKLCH L 75.6% C 0.111 H 199.5°. Best body text is #000000 at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#42C5CB
RGB	rgb(66, 197, 203)
HSL	hsl(183, 57%, 53%)
HSV	hsv(183, 67%, 80%)
CMYK	cmyk(67.5%, 3%, 0%, 20.4%)
CIE-LAB	lab(73.15, -32.90, -13.39)
CIE-LCH	lch(73.15, 35.53, 202.15°)
OKLab	oklab(75.61% -0.1049 -0.0372)
OKLCH	oklch(75.61% 0.111 199.5)
XYZ	xyz(32.9878, 45.3988, 63.5126)
Luminance	0.4540 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C5CB #CB4842

analogous

#42CB8D #42C5CB #4280CB

triadic

#42C5CB #CB42C5 #C5CB42

tetradic

#42C5CB #8D42CB #CB4842 #80CB42

square

#42C5CB #8D42CB #CB4842 #80CB42

split-complementary

#42C5CB #CB4280 #CB8D42

monochromatic

#206F73 #2D9EA3 #42C5CB #72D4D8 #A2E2E5

Accessibility & contrast

On white

2.08

#42C5CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.08

#42C5CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C5CB

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C5CB	#FFFFFF	#000000	##000000
##42C5CB	1.00	2.08	10.08	10.08
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.08	21.00	1.00	1.00
##000000	10.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7BCCC

Deuteranopia (green-blind)

#A3ADCC

Tritanopia (blue-blind)

#00CCC6

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #42c5cb;
/* rgb */ color: rgb(66, 197, 203);
/* oklch */ color: oklch(75.6% 0.111 199.5);

Tailwind

colors: {
  custom: {
    50: '#89d7da',
    500: '#42c5cb',
    950: '#000000',
  },
}

SCSS

$custom: #42c5cb;
$custom-light: #89d7da;
$custom-dark: #000000;

JSON

{
  "hex": "#42c5cb",
  "rgb": {
    "r": 66,
    "g": 197,
    "b": 203
  },
  "hsl": {
    "h": 182.628,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.75611,
    "c": 0.11133,
    "h": 199.5
  },
  "luminance": 0.45403
}

Semantic roles & 50–950 ramp

primary

#42C5CB

secondary

#D29997

accent

#4E48E0

background

#F9FDFD

surface

#F1FAFA

border

#CBD3D3

text

#0D1414

muted

#7E8383

Preview Lab

Preview with #42C5CB

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

Preview Lab → · Contrast checker → · Palette generator →