#6557BC#6557BC

#6557BC is a mid, vivid blue. Relative luminance 0.132; OKLCH L 52.2% C 0.153 H 286.2°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#6557BC
RGB	rgb(101, 87, 188)
HSL	hsl(248, 43%, 54%)
HSV	hsv(248, 54%, 74%)
CMYK	cmyk(46.3%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(43.08, 31.66, -51.58)
CIE-LCH	lch(43.08, 60.52, 301.54°)
OKLab	oklab(52.22% 0.0426 -0.1469)
OKLCH	oklch(52.22% 0.153 286.2)
XYZ	xyz(17.8495, 13.2132, 49.1771)
Luminance	0.1321 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557BC #AEBC57

analogous

#577CBC #6557BC #9857BC

triadic

#6557BC #BC6557 #57BC65

tetradic

#6557BC #BC577C #AEBC57 #57BC98

square

#6557BC #BC577C #AEBC57 #57BC98

split-complementary

#6557BC #BC9857 #7CBC57

monochromatic

#352C6D #4A3D99 #6557BC #8D83CD #B5AFDF

Accessibility & contrast

On white

5.76

#6557BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#6557BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557BC

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557BC	#FFFFFF	#000000	##FFFFFF
##6557BC	1.00	5.76	3.64	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2368BF

Deuteranopia (green-blind)

#2163BA

Tritanopia (blue-blind)

#496D81

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #6557bc;
/* rgb */ color: rgb(101, 87, 188);
/* oklch */ color: oklch(52.2% 0.153 286.2);

Tailwind

colors: {
  custom: {
    50: '#9686d1',
    500: '#6557bc',
    950: '#000000',
  },
}

SCSS

$custom: #6557bc;
$custom-light: #9686d1;
$custom-dark: #000000;

JSON

{
  "hex": "#6557bc",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 248.317,
    "s": 42.979,
    "l": 53.922
  },
  "oklch": {
    "l": 0.52223,
    "c": 0.15297,
    "h": 286.2
  },
  "luminance": 0.13214
}

Semantic roles & 50–950 ramp

primary

#6557BC

secondary

#C7CDA2

accent

#D355C1

background

#F9F8FC

surface

#F2EFF9

border

#CCCAD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #6557BC

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

Preview Lab → · Contrast checker → · Palette generator →