#6583EC#6583EC

#6583EC is a light, vivid blue. Relative luminance 0.251; OKLCH L 63.8% C 0.161 H 269.4°. Best body text is #000000 at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#6583EC
RGB	rgb(101, 131, 236)
HSL	hsl(227, 78%, 66%)
HSV	hsv(227, 57%, 93%)
CMYK	cmyk(57.2%, 44.5%, 0%, 7.5%)
CIE-LAB	lab(57.13, 19.92, -56.37)
CIE-LCH	lch(57.13, 59.79, 289.46°)
OKLab	oklab(63.76% -0.0016 -0.1606)
OKLCH	oklch(63.76% 0.161 269.4)
XYZ	xyz(28.6184, 25.0532, 82.6683)
Luminance	0.2505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6583EC #ECCE65

analogous

#65C6EC #6583EC #8A65EC

triadic

#6583EC #EC6583 #83EC65

tetradic

#6583EC #EC65C6 #ECCE65 #65EC8A

square

#6583EC #EC65C6 #ECCE65 #65EC8A

split-complementary

#6583EC #EC8A65 #C6EC65

monochromatic

#183DBF #2F57E5 #6583EC #9BAFF3 #D2DBF9

Accessibility & contrast

On white

3.49

#6583EC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.01

#6583EC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6583EC

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6583EC	#FFFFFF	#000000	##000000
##6583EC	1.00	3.49	6.01	6.01
#FFFFFF	3.49	1.00	21.00	21.00
#000000	6.01	21.00	1.00	1.00
##000000	6.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#538FF0

Deuteranopia (green-blind)

#4084EA

Tritanopia (blue-blind)

#009AAC

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #6583ec;
/* rgb */ color: rgb(101, 131, 236);
/* oklch */ color: oklch(63.8% 0.161 269.4);

Tailwind

colors: {
  custom: {
    50: '#9ba6f3',
    500: '#6583ec',
    950: '#000000',
  },
}

SCSS

$custom: #6583ec;
$custom-light: #9ba6f3;
$custom-dark: #000000;

JSON

{
  "hex": "#6583ec",
  "rgb": {
    "r": 101,
    "g": 131,
    "b": 236
  },
  "hsl": {
    "h": 226.667,
    "s": 78.035,
    "l": 66.078
  },
  "oklch": {
    "l": 0.63762,
    "c": 0.16066,
    "h": 269.4
  },
  "luminance": 0.25055
}

Semantic roles & 50–950 ramp

primary

#6583EC

secondary

#EDE3C0

accent

#AC0BDA

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F0F17

muted

#7F7F85

Preview Lab

Preview with #6583EC

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

Preview Lab → · Contrast checker → · Palette generator →