#42B9CC#42B9CC

#42B9CC is a light, moderate teal. Relative luminance 0.402; OKLCH L 72.8% C 0.107 H 210.1°. Best body text is #000000 at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#42B9CC
RGB	rgb(66, 185, 204)
HSL	hsl(188, 58%, 53%)
HSV	hsv(188, 68%, 80%)
CMYK	cmyk(67.6%, 9.3%, 0%, 20%)
CIE-LAB	lab(69.62, -26.78, -19.27)
CIE-LCH	lch(69.62, 32.99, 215.74°)
OKLab	oklab(72.77% -0.0924 -0.0535)
OKLCH	oklch(72.77% 0.107 210.1)
XYZ	xyz(30.4902, 40.2124, 63.2699)
Luminance	0.4022 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B9CC #CC5542

analogous

#42CC9A #42B9CC #4274CC

triadic

#42B9CC #CC42B9 #B9CC42

tetradic

#42B9CC #9A42CC #CC5542 #74CC42

square

#42B9CC #9A42CC #CC5542 #74CC42

split-complementary

#42B9CC #CC4274 #CC9A42

monochromatic

#1F6974 #2C94A4 #42B9CC #72CBD9 #A2DDE6

Accessibility & contrast

On white

2.32

#42B9CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.04

#42B9CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B9CC

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B9CC	#FFFFFF	#000000	##000000
##42B9CC	1.00	2.32	9.04	9.04
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.04	21.00	1.00	1.00
##000000	9.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B2CD

Deuteranopia (green-blind)

#95A4CC

Tritanopia (blue-blind)

#00C2BF

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #42b9cc;
/* rgb */ color: rgb(66, 185, 204);
/* oklch */ color: oklch(72.8% 0.107 210.1);

Tailwind

colors: {
  custom: {
    50: '#88cedb',
    500: '#42b9cc',
    950: '#000000',
  },
}

SCSS

$custom: #42b9cc;
$custom-light: #88cedb;
$custom-dark: #000000;

JSON

{
  "hex": "#42b9cc",
  "rgb": {
    "r": 66,
    "g": 185,
    "b": 204
  },
  "hsl": {
    "h": 188.261,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.72768,
    "c": 0.10682,
    "h": 210.1
  },
  "luminance": 0.40216
}

Semantic roles & 50–950 ramp

primary

#42B9CC

secondary

#D39F97

accent

#5C47E1

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B9CC

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

Preview Lab → · Contrast checker → · Palette generator →