#6557CD#6557CD

#6557CD is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.4% C 0.176 H 284.1°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#6557CD
RGB	rgb(101, 87, 205)
HSL	hsl(247, 54%, 57%)
HSV	hsv(247, 58%, 80%)
CMYK	cmyk(50.7%, 57.6%, 0%, 19.6%)
CIE-LAB	lab(44.22, 36.79, -59.60)
CIE-LCH	lch(44.22, 70.04, 301.69°)
OKLab	oklab(53.43% 0.0429 -0.1705)
OKLCH	oklch(53.43% 0.176 284.1)
XYZ	xyz(19.7912, 13.9898, 59.4032)
Luminance	0.1399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557CD #BFCD57

analogous

#5784CD #6557CD #A057CD

triadic

#6557CD #CD6557 #57CD65

tetradic

#6557CD #CD5784 #BFCD57 #57CDA0

square

#6557CD #CD5784 #BFCD57 #57CDA0

split-complementary

#6557CD #CDA057 #84CD57

monochromatic

#322783 #4435B2 #6557CD #9086DB #BBB5E9

Accessibility & contrast

On white

5.53

#6557CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#6557CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557CD

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557CD	#FFFFFF	#000000	##FFFFFF
##6557CD	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD1

Deuteranopia (green-blind)

#0065CB

Tritanopia (blue-blind)

#3D7289

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #6557cd;
/* rgb */ color: rgb(101, 87, 205);
/* oklch */ color: oklch(53.4% 0.176 284.1);

Tailwind

colors: {
  custom: {
    50: '#9987dd',
    500: '#6557cd',
    950: '#000000',
  },
}

SCSS

$custom: #6557cd;
$custom-light: #9987dd;
$custom-dark: #000000;

JSON

{
  "hex": "#6557cd",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 205
  },
  "hsl": {
    "h": 247.119,
    "s": 54.128,
    "l": 57.255
  },
  "oklch": {
    "l": 0.53427,
    "c": 0.17581,
    "h": 284.1
  },
  "luminance": 0.13991
}

Semantic roles & 50–950 ramp

primary

#6557CD

secondary

#D2D8A8

accent

#DD4ACC

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0F0B15

muted

#7E7C83

Preview Lab

Preview with #6557CD

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

Preview Lab → · Contrast checker → · Palette generator →