#4283CF#4283CF

#4283CF is a mid, vivid cyan. Relative luminance 0.219; OKLCH L 60.3% C 0.134 H 253.9°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#4283CF
RGB	rgb(66, 131, 207)
HSL	hsl(212, 59%, 54%)
HSV	hsv(212, 68%, 81%)
CMYK	cmyk(68.1%, 36.7%, 0%, 18.8%)
CIE-LAB	lab(53.91, 3.87, -45.32)
CIE-LCH	lch(53.91, 45.49, 274.88°)
OKLab	oklab(60.32% -0.0371 -0.1288)
OKLCH	oklch(60.32% 0.134 253.9)
XYZ	xyz(21.6214, 21.8936, 62.1058)
Luminance	0.2190 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283CF #CF8E42

analogous

#42CACF #4283CF #4742CF

triadic

#4283CF #CF4283 #83CF42

tetradic

#4283CF #CF42CA #CF8E42 #42CF47

square

#4283CF #CF42CA #CF8E42 #42CF47

split-complementary

#4283CF #CF4742 #CACF42

monochromatic

#1F4878 #2B65A9 #4283CF #73A3DB #A4C3E8

Accessibility & contrast

On white

3.90

#4283CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#4283CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283CF

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283CF	#FFFFFF	#000000	##000000
##4283CF	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6188D2

Deuteranopia (green-blind)

#4C7BCD

Tritanopia (blue-blind)

#00959F

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4283cf;
/* rgb */ color: rgb(66, 131, 207);
/* oklch */ color: oklch(60.3% 0.134 253.9);

Tailwind

colors: {
  custom: {
    50: '#85a6de',
    500: '#4283cf',
    950: '#000000',
  },
}

SCSS

$custom: #4283cf;
$custom-light: #85a6de;
$custom-dark: #000000;

JSON

{
  "hex": "#4283cf",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 207
  },
  "hsl": {
    "h": 212.34,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.60324,
    "c": 0.1341,
    "h": 253.9
  },
  "luminance": 0.21896
}

Semantic roles & 50–950 ramp

primary

#4283CF

secondary

#D5B998

accent

#9A45E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4283CF

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

Preview Lab → · Contrast checker → · Palette generator →