#6557FB#6557FB

#6557FB is a mid, highly saturated blue. Relative luminance 0.165; OKLCH L 57.0% C 0.234 H 279.8°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#6557FB
RGB	rgb(101, 87, 251)
HSL	hsl(245, 95%, 66%)
HSV	hsv(245, 65%, 98%)
CMYK	cmyk(59.8%, 65.3%, 0%, 1.6%)
CIE-LAB	lab(47.68, 50.83, -80.00)
CIE-LCH	lch(47.68, 94.79, 302.43°)
OKLab	oklab(57.04% 0.0398 -0.2305)
OKLCH	oklch(57.04% 0.234 279.8)
XYZ	xyz(26.1821, 16.5462, 93.0621)
Luminance	0.1655 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557FB #EDFB57

analogous

#579BFB #6557FB #B757FB

triadic

#6557FB #FB6557 #57FB65

tetradic

#6557FB #FB579B #EDFB57 #57FBB7

square

#6557FB #FB579B #EDFB57 #57FBB7

split-complementary

#6557FB #FBB757 #9BFB57

monochromatic

#1705D3 #2E1BFA #6557FB #9C93FC #D3CFFE

Accessibility & contrast

On white

4.87

#6557FB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#6557FB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557FB

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557FB	#FFFFFF	#000000	##FFFFFF
##6557FB	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077FF

Deuteranopia (green-blind)

#006BF8

Tritanopia (blue-blind)

#0081A2

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #6557fb;
/* rgb */ color: rgb(101, 87, 251);
/* oklch */ color: oklch(57.0% 0.234 279.8);

Tailwind

colors: {
  custom: {
    50: '#9f88fe',
    500: '#6557fb',
    950: '#000000',
  },
}

SCSS

$custom: #6557fb;
$custom-light: #9f88fe;
$custom-dark: #000000;

JSON

{
  "hex": "#6557fb",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 251
  },
  "hsl": {
    "h": 245.122,
    "s": 95.349,
    "l": 66.275
  },
  "oklch": {
    "l": 0.57042,
    "c": 0.23387,
    "h": 279.8
  },
  "luminance": 0.16548
}

Semantic roles & 50–950 ramp

primary

#6557FB

secondary

#EDF2BC

accent

#E600D2

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100B18

muted

#7F7C86

Preview Lab

Preview with #6557FB

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

Preview Lab → · Contrast checker → · Palette generator →