#42B8CB#42B8CB

#42B8CB is a light, moderate teal. Relative luminance 0.398; OKLCH L 72.5% C 0.106 H 210.2°. Best body text is #000000 at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#42B8CB
RGB	rgb(66, 184, 203)
HSL	hsl(188, 57%, 53%)
HSV	hsv(188, 67%, 80%)
CMYK	cmyk(67.5%, 9.4%, 0%, 20.4%)
CIE-LAB	lab(69.29, -26.58, -19.23)
CIE-LCH	lch(69.29, 32.81, 215.88°)
OKLab	oklab(72.49% -0.0918 -0.0534)
OKLCH	oklch(72.49% 0.106 210.2)
XYZ	xyz(30.1622, 39.7476, 62.5708)
Luminance	0.3975 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B8CB #CB5542

analogous

#42CB99 #42B8CB #4274CB

triadic

#42B8CB #CB42B8 #B8CB42

tetradic

#42B8CB #9942CB #CB5542 #74CB42

square

#42B8CB #9942CB #CB5542 #74CB42

split-complementary

#42B8CB #CB4274 #CB9942

monochromatic

#206773 #2D93A3 #42B8CB #72CAD8 #A2DCE5

Accessibility & contrast

On white

2.35

#42B8CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.95

#42B8CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B8CB

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B8CB	#FFFFFF	#000000	##000000
##42B8CB	1.00	2.35	8.95	8.95
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.95	21.00	1.00	1.00
##000000	8.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8B1CC

Deuteranopia (green-blind)

#94A3CB

Tritanopia (blue-blind)

#00C0BE

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #42b8cb;
/* rgb */ color: rgb(66, 184, 203);
/* oklch */ color: oklch(72.5% 0.106 210.2);

Tailwind

colors: {
  custom: {
    50: '#87cdda',
    500: '#42b8cb',
    950: '#000000',
  },
}

SCSS

$custom: #42b8cb;
$custom-light: #87cdda;
$custom-dark: #000000;

JSON

{
  "hex": "#42b8cb",
  "rgb": {
    "r": 66,
    "g": 184,
    "b": 203
  },
  "hsl": {
    "h": 188.321,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.7249,
    "c": 0.10624,
    "h": 210.2
  },
  "luminance": 0.39751
}

Semantic roles & 50–950 ramp

primary

#42B8CB

secondary

#D29F97

accent

#5D48E0

background

#F9FCFD

surface

#F1F9FA

border

#CBD2D3

text

#0D1314

muted

#7E8283

Preview Lab

Preview with #42B8CB

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

Preview Lab → · Contrast checker → · Palette generator →