#42B2D9#42B2D9

#42B2D9 is a light, moderate cyan. Relative luminance 0.380; OKLCH L 71.6% C 0.114 H 225.1°. Best body text is #000000 at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#42B2D9
RGB	rgb(66, 178, 217)
HSL	hsl(195, 67%, 55%)
HSV	hsv(195, 70%, 85%)
CMYK	cmyk(69.6%, 18%, 0%, 14.9%)
CIE-LAB	lab(68.02, -19.16, -28.85)
CIE-LCH	lch(68.02, 34.63, 236.40°)
OKLab	oklab(71.64% -0.0804 -0.0807)
OKLCH	oklch(71.64% 0.114 225.1)
XYZ	xyz(30.6865, 38.0053, 71.3507)
Luminance	0.3801 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2D9 #D96942

analogous

#42D9B5 #42B2D9 #4266D9

triadic

#42B2D9 #D942B2 #B2D942

tetradic

#42B2D9 #B542D9 #D96942 #66D942

square

#42B2D9 #B542D9 #D96942 #66D942

split-complementary

#42B2D9 #D94266 #D9B542

monochromatic

#1B6A86 #2593B9 #42B2D9 #75C7E3 #A8DCED

Accessibility & contrast

On white

2.44

#42B2D9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.60

#42B2D9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2D9

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2D9	#FFFFFF	#000000	##000000
##42B2D9	1.00	2.44	8.60	8.60
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.60	21.00	1.00	1.00
##000000	8.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CAEDB

Deuteranopia (green-blind)

#889FD9

Tritanopia (blue-blind)

#00BEBF

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #42b2d9;
/* rgb */ color: rgb(66, 178, 217);
/* oklch */ color: oklch(71.6% 0.114 225.1);

Tailwind

colors: {
  custom: {
    50: '#89c9e4',
    500: '#42b2d9',
    950: '#000000',
  },
}

SCSS

$custom: #42b2d9;
$custom-light: #89c9e4;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2d9",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 217
  },
  "hsl": {
    "h": 195.497,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.71642,
    "c": 0.11392,
    "h": 225.1
  },
  "luminance": 0.38009
}

Semantic roles & 50–950 ramp

primary

#42B2D9

secondary

#DBAC9C

accent

#6B3EE9

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B2D9

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

Preview Lab → · Contrast checker → · Palette generator →