#42B0CE#42B0CE

#42B0CE is a light, moderate cyan. Relative luminance 0.367; OKLCH L 70.7% C 0.107 H 219.4°. Best body text is #000000 at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#42B0CE
RGB	rgb(66, 176, 206)
HSL	hsl(193, 59%, 53%)
HSV	hsv(193, 68%, 81%)
CMYK	cmyk(68%, 14.6%, 0%, 19.2%)
CIE-LAB	lab(67.02, -21.60, -24.33)
CIE-LCH	lch(67.02, 32.54, 228.40°)
OKLab	oklab(70.7% -0.0825 -0.0679)
OKLCH	oklch(70.7% 0.107 219.4)
XYZ	xyz(28.9081, 36.6619, 63.9335)
Luminance	0.3666 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B0CE #CE6042

analogous

#42CEA6 #42B0CE #426ACE

triadic

#42B0CE #CE42B0 #B0CE42

tetradic

#42B0CE #A642CE #CE6042 #6ACE42

square

#42B0CE #A642CE #CE6042 #6ACE42

split-complementary

#42B0CE #CE426A #CEA642

monochromatic

#1F6477 #2B8DA7 #42B0CE #73C4DB #A3D9E7

Accessibility & contrast

On white

2.52

#42B0CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.33

#42B0CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B0CE

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B0CE	#FFFFFF	#000000	##000000
##42B0CE	1.00	2.52	8.33	8.33
#FFFFFF	2.52	1.00	21.00	21.00
#000000	8.33	21.00	1.00	1.00
##000000	8.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DABD0

Deuteranopia (green-blind)

#8A9DCE

Tritanopia (blue-blind)

#00BAB9

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #42b0ce;
/* rgb */ color: rgb(66, 176, 206);
/* oklch */ color: oklch(70.7% 0.107 219.4);

Tailwind

colors: {
  custom: {
    50: '#87c7dd',
    500: '#42b0ce',
    950: '#000000',
  },
}

SCSS

$custom: #42b0ce;
$custom-light: #87c7dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42b0ce",
  "rgb": {
    "r": 66,
    "g": 176,
    "b": 206
  },
  "hsl": {
    "h": 192.857,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.70703,
    "c": 0.10685,
    "h": 219.4
  },
  "luminance": 0.36665
}

Semantic roles & 50–950 ramp

primary

#42B0CE

secondary

#D4A598

accent

#6746E2

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #42B0CE

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

Preview Lab → · Contrast checker → · Palette generator →