#42B7D6#42B7D6

#42B7D6 is a light, moderate cyan. Relative luminance 0.399; OKLCH L 72.7% C 0.111 H 219.0°. Best body text is #000000 at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#42B7D6
RGB	rgb(66, 183, 214)
HSL	hsl(193, 64%, 55%)
HSV	hsv(193, 69%, 84%)
CMYK	cmyk(69.2%, 14.5%, 0%, 16.1%)
CIE-LAB	lab(69.38, -22.70, -25.12)
CIE-LCH	lch(69.38, 33.85, 227.90°)
OKLab	oklab(72.69% -0.0865 -0.0701)
OKLCH	oklch(72.69% 0.111 219)
XYZ	xyz(31.3128, 39.8767, 69.6520)
Luminance	0.3988 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B7D6 #D66142

analogous

#42D6AB #42B7D6 #426DD6

triadic

#42B7D6 #D642B7 #B7D642

tetradic

#42B7D6 #AB42D6 #D66142 #6DD642

square

#42B7D6 #AB42D6 #D66142 #6DD642

split-complementary

#42B7D6 #D6426D #D6AB42

monochromatic

#1C6C82 #2796B4 #42B7D6 #74CAE1 #A7DDEC

Accessibility & contrast

On white

2.34

#42B7D6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.98

#42B7D6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B7D6

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B7D6	#FFFFFF	#000000	##000000
##42B7D6	1.00	2.34	8.98	8.98
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.98	21.00	1.00	1.00
##000000	8.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B2D8

Deuteranopia (green-blind)

#8FA3D6

Tritanopia (blue-blind)

#00C1C1

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #42b7d6;
/* rgb */ color: rgb(66, 183, 214);
/* oklch */ color: oklch(72.7% 0.111 219.0);

Tailwind

colors: {
  custom: {
    50: '#89cce2',
    500: '#42b7d6',
    950: '#000000',
  },
}

SCSS

$custom: #42b7d6;
$custom-light: #89cce2;
$custom-dark: #000000;

JSON

{
  "hex": "#42b7d6",
  "rgb": {
    "r": 66,
    "g": 183,
    "b": 214
  },
  "hsl": {
    "h": 192.568,
    "s": 64.348,
    "l": 54.902
  },
  "oklch": {
    "l": 0.72693,
    "c": 0.1113,
    "h": 219
  },
  "luminance": 0.3988
}

Semantic roles & 50–950 ramp

primary

#42B7D6

secondary

#D9A89B

accent

#6340E7

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B7D6

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

Preview Lab → · Contrast checker → · Palette generator →