#42B1D5#42B1D5

#42B1D5 is a light, moderate cyan. Relative luminance 0.374; OKLCH L 71.2% C 0.111 H 223.4°. Best body text is #000000 at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#42B1D5
RGB	rgb(66, 177, 213)
HSL	hsl(195, 64%, 55%)
HSV	hsv(195, 69%, 84%)
CMYK	cmyk(69%, 16.9%, 0%, 16.5%)
CIE-LAB	lab(67.58, -19.92, -27.34)
CIE-LCH	lch(67.58, 33.82, 233.92°)
OKLab	oklab(71.23% -0.0809 -0.0764)
OKLCH	oklch(71.23% 0.111 223.4)
XYZ	xyz(29.9742, 37.4033, 68.5777)
Luminance	0.3741 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B1D5 #D56642

analogous

#42D5B0 #42B1D5 #4268D5

triadic

#42B1D5 #D542B1 #B1D542

tetradic

#42B1D5 #B042D5 #D56642 #68D542

square

#42B1D5 #B042D5 #D56642 #68D542

split-complementary

#42B1D5 #D54268 #D5B042

monochromatic

#1C6880 #2890B2 #42B1D5 #74C6E0 #A6DAEB

Accessibility & contrast

On white

2.48

#42B1D5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.48

#42B1D5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B1D5

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B1D5	#FFFFFF	#000000	##000000
##42B1D5	1.00	2.48	8.48	8.48
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.48	21.00	1.00	1.00
##000000	8.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CADD7

Deuteranopia (green-blind)

#889ED5

Tritanopia (blue-blind)

#00BCBD

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b1d5;
/* rgb */ color: rgb(66, 177, 213);
/* oklch */ color: oklch(71.2% 0.111 223.4);

Tailwind

colors: {
  custom: {
    50: '#88c8e2',
    500: '#42b1d5',
    950: '#000000',
  },
}

SCSS

$custom: #42b1d5;
$custom-light: #88c8e2;
$custom-dark: #000000;

JSON

{
  "hex": "#42b1d5",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 213
  },
  "hsl": {
    "h": 194.694,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.71234,
    "c": 0.11126,
    "h": 223.4
  },
  "luminance": 0.37407
}

Semantic roles & 50–950 ramp

primary

#42B1D5

secondary

#D8AA9A

accent

#6A41E7

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B1D5

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

Preview Lab → · Contrast checker → · Palette generator →