#42B2CF#42B2CF

#42B2CF is a light, moderate cyan. Relative luminance 0.375; OKLCH L 71.2% C 0.107 H 218.4°. Best body text is #000000 at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#42B2CF
RGB	rgb(66, 178, 207)
HSL	hsl(192, 59%, 54%)
HSV	hsv(192, 68%, 81%)
CMYK	cmyk(68.1%, 14%, 0%, 18.8%)
CIE-LAB	lab(67.65, -22.32, -23.92)
CIE-LCH	lch(67.65, 32.72, 226.98°)
OKLab	oklab(71.22% -0.0842 -0.0667)
OKLCH	oklch(71.22% 0.107 218.4)
XYZ	xyz(29.4250, 37.5007, 64.7070)
Luminance	0.3750 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2CF #CF5F42

analogous

#42CFA5 #42B2CF #426BCF

triadic

#42B2CF #CF42B2 #B2CF42

tetradic

#42B2CF #A542CF #CF5F42 #6BCF42

square

#42B2CF #A542CF #CF5F42 #6BCF42

split-complementary

#42B2CF #CF426B #CFA542

monochromatic

#1F6678 #2B8FA9 #42B2CF #73C6DB #A4DAE8

Accessibility & contrast

On white

2.47

#42B2CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.50

#42B2CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2CF

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2CF	#FFFFFF	#000000	##000000
##42B2CF	1.00	2.47	8.50	8.50
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.50	21.00	1.00	1.00
##000000	8.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FADD1

Deuteranopia (green-blind)

#8C9ECF

Tritanopia (blue-blind)

#00BCBB

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b2cf;
/* rgb */ color: rgb(66, 178, 207);
/* oklch */ color: oklch(71.2% 0.107 218.4);

Tailwind

colors: {
  custom: {
    50: '#87c9dd',
    500: '#42b2cf',
    950: '#000000',
  },
}

SCSS

$custom: #42b2cf;
$custom-light: #87c9dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2cf",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 207
  },
  "hsl": {
    "h": 192.34,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.71219,
    "c": 0.10739,
    "h": 218.4
  },
  "luminance": 0.37504
}

Semantic roles & 50–950 ramp

primary

#42B2CF

secondary

#D5A598

accent

#6645E3

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B2CF

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

Preview Lab → · Contrast checker → · Palette generator →