#42C1DC#42C1DC

#42C1DC is a light, moderate cyan. Relative luminance 0.445; OKLCH L 75.3% C 0.115 H 214.9°. Best body text is #000000 at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#42C1DC
RGB	rgb(66, 193, 220)
HSL	hsl(191, 69%, 56%)
HSV	hsv(191, 70%, 86%)
CMYK	cmyk(70%, 12.3%, 0%, 13.7%)
CIE-LAB	lab(72.54, -25.89, -23.57)
CIE-LCH	lch(72.54, 35.01, 222.32°)
OKLab	oklab(75.3% -0.094 -0.0656)
OKLCH	oklch(75.3% 0.115 214.9)
XYZ	xyz(34.2296, 44.4615, 74.4742)
Luminance	0.4446 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C1DC #DC5D42

analogous

#42DCAA #42C1DC #4274DC

triadic

#42C1DC #DC42C1 #C1DC42

tetradic

#42C1DC #AA42DC #DC5D42 #74DC42

square

#42C1DC #AA42DC #DC5D42 #74DC42

split-complementary

#42C1DC #DC4274 #DCAA42

monochromatic

#1A768A #23A3BE #42C1DC #76D2E6 #A9E3EF

Accessibility & contrast

On white

2.12

#42C1DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.89

#42C1DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C1DC

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C1DC	#FFFFFF	#000000	##000000
##42C1DC	1.00	2.12	9.89	9.89
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.89	21.00	1.00	1.00
##000000	9.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEBBDE

Deuteranopia (green-blind)

#98ABDC

Tritanopia (blue-blind)

#00CBC9

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #42c1dc;
/* rgb */ color: rgb(66, 193, 220);
/* oklch */ color: oklch(75.3% 0.115 214.9);

Tailwind

colors: {
  custom: {
    50: '#8ad4e7',
    500: '#42c1dc',
    950: '#000000',
  },
}

SCSS

$custom: #42c1dc;
$custom-light: #8ad4e7;
$custom-dark: #000000;

JSON

{
  "hex": "#42c1dc",
  "rgb": {
    "r": 66,
    "g": 193,
    "b": 220
  },
  "hsl": {
    "h": 190.519,
    "s": 68.75,
    "l": 56.078
  },
  "oklch": {
    "l": 0.75299,
    "c": 0.11468,
    "h": 214.9
  },
  "luminance": 0.44465
}

Semantic roles & 50–950 ramp

primary

#42C1DC

secondary

#DDA89D

accent

#5B3CEC

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #42C1DC

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

Preview Lab → · Contrast checker → · Palette generator →