#42C9CC#42C9CC

#42C9CC is a light, moderate teal. Relative luminance 0.473; OKLCH L 76.6% C 0.114 H 197.2°. Best body text is #000000 at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#42C9CC
RGB	rgb(66, 201, 204)
HSL	hsl(181, 58%, 53%)
HSV	hsv(181, 68%, 80%)
CMYK	cmyk(67.6%, 1.5%, 0%, 20%)
CIE-LAB	lab(74.37, -34.51, -12.11)
CIE-LCH	lch(74.37, 36.57, 199.34°)
OKLab	oklab(76.61% -0.1085 -0.0336)
OKLCH	oklch(76.61% 0.114 197.2)
XYZ	xyz(34.0276, 47.2873, 64.4490)
Luminance	0.4729 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C9CC #CC4542

analogous

#42CC8A #42C9CC #4284CC

triadic

#42C9CC #CC42C9 #C9CC42

tetradic

#42C9CC #8A42CC #CC4542 #84CC42

square

#42C9CC #8A42CC #CC4542 #84CC42

split-complementary

#42C9CC #CC4284 #CC8A42

monochromatic

#1F7274 #2CA2A4 #42C9CC #72D7D9 #A2E5E6

Accessibility & contrast

On white

2.01

#42C9CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.46

#42C9CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C9CC

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C9CC	#FFFFFF	#000000	##000000
##42C9CC	1.00	2.01	10.46	10.46
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.46	21.00	1.00	1.00
##000000	10.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBC0CC

Deuteranopia (green-blind)

#A7B0CD

Tritanopia (blue-blind)

#00D0CA

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #42c9cc;
/* rgb */ color: rgb(66, 201, 204);
/* oklch */ color: oklch(76.6% 0.114 197.2);

Tailwind

colors: {
  custom: {
    50: '#89dadb',
    500: '#42c9cc',
    950: '#000000',
  },
}

SCSS

$custom: #42c9cc;
$custom-light: #89dadb;
$custom-dark: #000000;

JSON

{
  "hex": "#42c9cc",
  "rgb": {
    "r": 66,
    "g": 201,
    "b": 204
  },
  "hsl": {
    "h": 181.304,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.76608,
    "c": 0.11361,
    "h": 197.2
  },
  "luminance": 0.47291
}

Semantic roles & 50–950 ramp

primary

#42C9CC

secondary

#D39897

accent

#4A47E1

background

#F9FDFD

surface

#F1FAFB

border

#CBD3D4

text

#0D1515

muted

#7E8383

Preview Lab

Preview with #42C9CC

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

Preview Lab → · Contrast checker → · Palette generator →