#6558BB#6558BB

#6558BB is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.3% C 0.150 H 286.0°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#6558BB
RGB	rgb(101, 88, 187)
HSL	hsl(248, 42%, 54%)
HSV	hsv(248, 53%, 73%)
CMYK	cmyk(46%, 52.9%, 0%, 26.7%)
CIE-LAB	lab(43.26, 30.76, -50.71)
CIE-LCH	lch(43.26, 59.31, 301.24°)
OKLab	oklab(52.34% 0.0413 -0.1444)
OKLCH	oklch(52.34% 0.15 286)
XYZ	xyz(17.8236, 13.3332, 48.6385)
Luminance	0.1333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6558BB #AEBB58

analogous

#587DBB #6558BB #9758BB

triadic

#6558BB #BB6558 #58BB65

tetradic

#6558BB #BB587D #AEBB58 #58BB97

square

#6558BB #BB587D #AEBB58 #58BB97

split-complementary

#6558BB #BB9758 #7DBB58

monochromatic

#352C6C #4A3E98 #6558BB #8D83CD #B5AFDE

Accessibility & contrast

On white

5.73

#6558BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#6558BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6558BB

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6558BB	#FFFFFF	#000000	##FFFFFF
##6558BB	1.00	5.73	3.67	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2769BE

Deuteranopia (green-blind)

#2563B9

Tritanopia (blue-blind)

#496D81

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #6558bb;
/* rgb */ color: rgb(101, 88, 187);
/* oklch */ color: oklch(52.3% 0.150 286.0);

Tailwind

colors: {
  custom: {
    50: '#9687d0',
    500: '#6558bb',
    950: '#000000',
  },
}

SCSS

$custom: #6558bb;
$custom-light: #9687d0;
$custom-dark: #000000;

JSON

{
  "hex": "#6558bb",
  "rgb": {
    "r": 101,
    "g": 88,
    "b": 187
  },
  "hsl": {
    "h": 247.879,
    "s": 42.128,
    "l": 53.922
  },
  "oklch": {
    "l": 0.52335,
    "c": 0.15016,
    "h": 286
  },
  "luminance": 0.13334
}

Semantic roles & 50–950 ramp

primary

#6558BB

secondary

#C7CDA2

accent

#D256C2

background

#F9F8FC

surface

#F2EFF9

border

#CCCAD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #6558BB

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

Preview Lab → · Contrast checker → · Palette generator →