#42B7CF#42B7CF

#42B7CF is a light, moderate cyan. Relative luminance 0.395; OKLCH L 72.4% C 0.108 H 214.1°. Best body text is #000000 at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#42B7CF
RGB	rgb(66, 183, 207)
HSL	hsl(190, 59%, 54%)
HSV	hsv(190, 68%, 81%)
CMYK	cmyk(68.1%, 11.6%, 0%, 18.8%)
CIE-LAB	lab(69.13, -24.86, -21.66)
CIE-LCH	lch(69.13, 32.98, 221.06°)
OKLab	oklab(72.41% -0.0892 -0.0603)
OKLCH	oklch(72.41% 0.108 214.1)
XYZ	xyz(30.4380, 39.5268, 65.0447)
Luminance	0.3953 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B7CF #CF5A42

analogous

#42CFA0 #42B7CF #4270CF

triadic

#42B7CF #CF42B7 #B7CF42

tetradic

#42B7CF #A042CF #CF5A42 #70CF42

square

#42B7CF #A042CF #CF5A42 #70CF42

split-complementary

#42B7CF #CF4270 #CFA042

monochromatic

#1F6978 #2B93A9 #42B7CF #73CADB #A4DCE8

Accessibility & contrast

On white

2.36

#42B7CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.91

#42B7CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B7CF

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B7CF	#FFFFFF	#000000	##000000
##42B7CF	1.00	2.36	8.91	8.91
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.91	21.00	1.00	1.00
##000000	8.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B1D0

Deuteranopia (green-blind)

#92A2CF

Tritanopia (blue-blind)

#00C0BE

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #42b7cf;
/* rgb */ color: rgb(66, 183, 207);
/* oklch */ color: oklch(72.4% 0.108 214.1);

Tailwind

colors: {
  custom: {
    50: '#88cddd',
    500: '#42b7cf',
    950: '#000000',
  },
}

SCSS

$custom: #42b7cf;
$custom-light: #88cddd;
$custom-dark: #000000;

JSON

{
  "hex": "#42b7cf",
  "rgb": {
    "r": 66,
    "g": 183,
    "b": 207
  },
  "hsl": {
    "h": 190.213,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.72408,
    "c": 0.10767,
    "h": 214.1
  },
  "luminance": 0.3953
}

Semantic roles & 50–950 ramp

primary

#42B7CF

secondary

#D5A298

accent

#6045E3

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B7CF

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

Preview Lab → · Contrast checker → · Palette generator →