#4283D5#4283D5

#4283D5 is a mid, vivid cyan. Relative luminance 0.222; OKLCH L 60.7% C 0.142 H 255.4°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#4283D5
RGB	rgb(66, 131, 213)
HSL	hsl(213, 64%, 55%)
HSV	hsv(213, 69%, 84%)
CMYK	cmyk(69%, 38.5%, 0%, 16.5%)
CIE-LAB	lab(54.23, 5.98, -48.21)
CIE-LCH	lch(54.23, 48.58, 277.07°)
OKLab	oklab(60.68% -0.0357 -0.1373)
OKLCH	oklch(60.68% 0.142 255.4)
XYZ	xyz(22.3689, 22.1926, 66.0426)
Luminance	0.2220 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283D5 #D59442

analogous

#42CDD5 #4283D5 #4A42D5

triadic

#4283D5 #D54283 #83D542

tetradic

#4283D5 #D542CD #D59442 #42D54A

square

#4283D5 #D542CD #D59442 #42D54A

split-complementary

#4283D5 #D54A42 #CDD542

monochromatic

#1C4980 #2865B2 #4283D5 #74A4E0 #A6C5EB

Accessibility & contrast

On white

3.86

#4283D5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#4283D5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283D5

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283D5	#FFFFFF	#000000	##000000
##4283D5	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E89D8

Deuteranopia (green-blind)

#477BD3

Tritanopia (blue-blind)

#0096A2

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4283d5;
/* rgb */ color: rgb(66, 131, 213);
/* oklch */ color: oklch(60.7% 0.142 255.4);

Tailwind

colors: {
  custom: {
    50: '#86a6e2',
    500: '#4283d5',
    950: '#000000',
  },
}

SCSS

$custom: #4283d5;
$custom-light: #86a6e2;
$custom-dark: #000000;

JSON

{
  "hex": "#4283d5",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 213
  },
  "hsl": {
    "h": 213.469,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.60675,
    "c": 0.14187,
    "h": 255.4
  },
  "luminance": 0.22195
}

Semantic roles & 50–950 ramp

primary

#4283D5

secondary

#D8BD9A

accent

#9D41E7

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4283D5

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

Preview Lab → · Contrast checker → · Palette generator →