#6557CC#6557CC

#6557CC is a mid, vivid blue. Relative luminance 0.139; OKLCH L 53.4% C 0.174 H 284.2°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#6557CC
RGB	rgb(101, 87, 204)
HSL	hsl(247, 53%, 57%)
HSV	hsv(247, 57%, 80%)
CMYK	cmyk(50.5%, 57.4%, 0%, 20%)
CIE-LAB	lab(44.15, 36.49, -59.13)
CIE-LCH	lch(44.15, 69.49, 301.68°)
OKLab	oklab(53.35% 0.0429 -0.1691)
OKLCH	oklch(53.35% 0.174 284.2)
XYZ	xyz(19.6708, 13.9417, 58.7696)
Luminance	0.1394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557CC #BECC57

analogous

#5784CC #6557CC #9F57CC

triadic

#6557CC #CC6557 #57CC65

tetradic

#6557CC #CC5784 #BECC57 #57CC9F

square

#6557CC #CC5784 #BECC57 #57CC9F

split-complementary

#6557CC #CC9F57 #84CC57

monochromatic

#322781 #4436B0 #6557CC #9086DA #BBB5E9

Accessibility & contrast

On white

5.54

#6557CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#6557CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557CC

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557CC	#FFFFFF	#000000	##FFFFFF
##6557CC	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD0

Deuteranopia (green-blind)

#0065CA

Tritanopia (blue-blind)

#3E7289

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #6557cc;
/* rgb */ color: rgb(101, 87, 204);
/* oklch */ color: oklch(53.4% 0.174 284.2);

Tailwind

colors: {
  custom: {
    50: '#9887dc',
    500: '#6557cc',
    950: '#000000',
  },
}

SCSS

$custom: #6557cc;
$custom-light: #9887dc;
$custom-dark: #000000;

JSON

{
  "hex": "#6557cc",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 247.179,
    "s": 53.425,
    "l": 57.059
  },
  "oklch": {
    "l": 0.53354,
    "c": 0.17448,
    "h": 284.2
  },
  "luminance": 0.13943
}

Semantic roles & 50–950 ramp

primary

#6557CC

secondary

#D1D7A8

accent

#DD4BCB

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #6557CC

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

Preview Lab → · Contrast checker → · Palette generator →