#42B3D2#42B3D2

#42B3D2 is a light, moderate cyan. Relative luminance 0.381; OKLCH L 71.6% C 0.109 H 219.6°. Best body text is #000000 at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#42B3D2
RGB	rgb(66, 179, 210)
HSL	hsl(193, 62%, 54%)
HSV	hsv(193, 69%, 82%)
CMYK	cmyk(68.6%, 14.8%, 0%, 17.6%)
CIE-LAB	lab(68.06, -21.90, -24.95)
CIE-LCH	lch(68.06, 33.20, 228.73°)
OKLab	oklab(71.58% -0.084 -0.0696)
OKLCH	oklch(71.58% 0.109 219.6)
XYZ	xyz(29.9949, 38.0482, 66.7235)
Luminance	0.3805 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B3D2 #D26142

analogous

#42D2A9 #42B3D2 #426BD2

triadic

#42B3D2 #D242B3 #B3D242

tetradic

#42B3D2 #A942D2 #D26142 #6BD242

square

#42B3D2 #A942D2 #D26142 #6BD242

split-complementary

#42B3D2 #D2426B #D2A942

monochromatic

#1E687C #2991AD #42B3D2 #73C7DE #A5DBEA

Accessibility & contrast

On white

2.44

#42B3D2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.61

#42B3D2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B3D2

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B3D2	#FFFFFF	#000000	##000000
##42B3D2	1.00	2.44	8.61	8.61
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.61	21.00	1.00	1.00
##000000	8.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0AED4

Deuteranopia (green-blind)

#8C9FD2

Tritanopia (blue-blind)

#00BDBD

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #42b3d2;
/* rgb */ color: rgb(66, 179, 210);
/* oklch */ color: oklch(71.6% 0.109 219.6);

Tailwind

colors: {
  custom: {
    50: '#88cadf',
    500: '#42b3d2',
    950: '#000000',
  },
}

SCSS

$custom: #42b3d2;
$custom-light: #88cadf;
$custom-dark: #000000;

JSON

{
  "hex": "#42b3d2",
  "rgb": {
    "r": 66,
    "g": 179,
    "b": 210
  },
  "hsl": {
    "h": 192.917,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.7158,
    "c": 0.10911,
    "h": 219.6
  },
  "luminance": 0.38052
}

Semantic roles & 50–950 ramp

primary

#42B3D2

secondary

#D7A699

accent

#6643E5

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B3D2

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

Preview Lab → · Contrast checker → · Palette generator →