#4283D3#4283D3

#4283D3 is a mid, vivid cyan. Relative luminance 0.221; OKLCH L 60.6% C 0.139 H 254.9°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#4283D3
RGB	rgb(66, 131, 211)
HSL	hsl(213, 62%, 54%)
HSV	hsv(213, 69%, 83%)
CMYK	cmyk(68.7%, 37.9%, 0%, 17.3%)
CIE-LAB	lab(54.12, 5.28, -47.25)
CIE-LCH	lch(54.12, 47.54, 276.37°)
OKLab	oklab(60.56% -0.0362 -0.1345)
OKLCH	oklch(60.56% 0.139 254.9)
XYZ	xyz(22.1166, 22.0917, 64.7139)
Luminance	0.2209 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283D3 #D39242

analogous

#42CCD3 #4283D3 #4942D3

triadic

#4283D3 #D34283 #83D342

tetradic

#4283D3 #D342CC #D39242 #42D349

square

#4283D3 #D342CC #D39242 #42D349

split-complementary

#4283D3 #D34942 #CCD342

monochromatic

#1D487D #2965AF #4283D3 #74A4DF #A5C4EA

Accessibility & contrast

On white

3.88

#4283D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#4283D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283D3

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283D3	#FFFFFF	#000000	##000000
##4283D3	1.00	3.88	5.42	5.42
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F89D6

Deuteranopia (green-blind)

#497BD1

Tritanopia (blue-blind)

#0096A1

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4283d3;
/* rgb */ color: rgb(66, 131, 211);
/* oklch */ color: oklch(60.6% 0.139 254.9);

Tailwind

colors: {
  custom: {
    50: '#86a6e1',
    500: '#4283d3',
    950: '#000000',
  },
}

SCSS

$custom: #4283d3;
$custom-light: #86a6e1;
$custom-dark: #000000;

JSON

{
  "hex": "#4283d3",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 211
  },
  "hsl": {
    "h": 213.103,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.60557,
    "c": 0.13927,
    "h": 254.9
  },
  "luminance": 0.22094
}

Semantic roles & 50–950 ramp

primary

#4283D3

secondary

#D7BC9A

accent

#9C42E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4283D3

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

Preview Lab → · Contrast checker → · Palette generator →