#4283D0#4283D0

#4283D0 is a mid, vivid cyan. Relative luminance 0.219; OKLCH L 60.4% C 0.135 H 254.2°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#4283D0
RGB	rgb(66, 131, 208)
HSL	hsl(213, 60%, 54%)
HSV	hsv(213, 68%, 82%)
CMYK	cmyk(68.3%, 37%, 0%, 18.4%)
CIE-LAB	lab(53.97, 4.22, -45.81)
CIE-LCH	lch(53.97, 46.00, 275.27°)
OKLab	oklab(60.38% -0.0369 -0.1303)
OKLCH	oklch(60.38% 0.135 254.2)
XYZ	xyz(21.7441, 21.9427, 62.7517)
Luminance	0.2195 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283D0 #D08F42

analogous

#42CAD0 #4283D0 #4842D0

triadic

#4283D0 #D04283 #83D042

tetradic

#4283D0 #D042CA #D08F42 #42D048

square

#4283D0 #D042CA #D08F42 #42D048

split-complementary

#4283D0 #D04842 #CAD042

monochromatic

#1E4879 #2A65AA #4283D0 #73A3DC #A4C3E8

Accessibility & contrast

On white

3.90

#4283D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#4283D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283D0

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283D0	#FFFFFF	#000000	##000000
##4283D0	1.00	3.90	5.39	5.39
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6088D3

Deuteranopia (green-blind)

#4C7BCE

Tritanopia (blue-blind)

#00959F

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4283d0;
/* rgb */ color: rgb(66, 131, 208);
/* oklch */ color: oklch(60.4% 0.135 254.2);

Tailwind

colors: {
  custom: {
    50: '#86a6df',
    500: '#4283d0',
    950: '#000000',
  },
}

SCSS

$custom: #4283d0;
$custom-light: #86a6df;
$custom-dark: #000000;

JSON

{
  "hex": "#4283d0",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 208
  },
  "hsl": {
    "h": 212.535,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.60382,
    "c": 0.13539,
    "h": 254.2
  },
  "luminance": 0.21945
}

Semantic roles & 50–950 ramp

primary

#4283D0

secondary

#D5B999

accent

#9B44E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4283D0

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

Preview Lab → · Contrast checker → · Palette generator →