#42C5DD#42C5DD

#42C5DD is a light, moderate teal. Relative luminance 0.463; OKLCH L 76.3% C 0.116 H 212.4°. Best body text is #000000 at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#42C5DD
RGB	rgb(66, 197, 221)
HSL	hsl(189, 70%, 56%)
HSV	hsv(189, 70%, 87%)
CMYK	cmyk(70.1%, 10.9%, 0%, 13.3%)
CIE-LAB	lab(73.74, -27.57, -22.27)
CIE-LCH	lch(73.74, 35.44, 218.93°)
OKLab	oklab(76.28% -0.0976 -0.062)
OKLCH	oklch(76.28% 0.116 212.4)
XYZ	xyz(35.2586, 46.3071, 75.4725)
Luminance	0.4631 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C5DD #DD5A42

analogous

#42DDA8 #42C5DD #4278DD

triadic

#42C5DD #DD42C5 #C5DD42

tetradic

#42C5DD #A842DD #DD5A42 #78DD42

square

#42C5DD #A842DD #DD5A42 #78DD42

split-complementary

#42C5DD #DD4278 #DDA842

monochromatic

#197A8C #22A7BF #42C5DD #76D5E6 #AAE5F0

Accessibility & contrast

On white

2.05

#42C5DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.26

#42C5DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C5DD

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C5DD	#FFFFFF	#000000	##000000
##42C5DD	1.00	2.05	10.26	10.26
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.26	21.00	1.00	1.00
##000000	10.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2BEDE

Deuteranopia (green-blind)

#9DAEDD

Tritanopia (blue-blind)

#00CFCC

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #42c5dd;
/* rgb */ color: rgb(66, 197, 221);
/* oklch */ color: oklch(76.3% 0.116 212.4);

Tailwind

colors: {
  custom: {
    50: '#8bd7e7',
    500: '#42c5dd',
    950: '#000000',
  },
}

SCSS

$custom: #42c5dd;
$custom-light: #8bd7e7;
$custom-dark: #000000;

JSON

{
  "hex": "#42c5dd",
  "rgb": {
    "r": 66,
    "g": 197,
    "b": 221
  },
  "hsl": {
    "h": 189.29,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.76283,
    "c": 0.11558,
    "h": 212.4
  },
  "luminance": 0.46311
}

Semantic roles & 50–950 ramp

primary

#42C5DD

secondary

#DDA79D

accent

#573BEC

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #42C5DD

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

Preview Lab → · Contrast checker → · Palette generator →