#6557B2#6557B2

#6557B2 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.6% C 0.139 H 287.5°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#6557B2
RGB	rgb(101, 87, 178)
HSL	hsl(249, 37%, 52%)
HSV	hsv(249, 51%, 70%)
CMYK	cmyk(43.3%, 51.1%, 0%, 30.2%)
CIE-LAB	lab(42.46, 28.69, -46.74)
CIE-LCH	lch(42.46, 54.84, 301.54°)
OKLab	oklab(51.55% 0.042 -0.1327)
OKLCH	oklch(51.55% 0.139 287.5)
XYZ	xyz(16.8086, 12.7968, 43.6952)
Luminance	0.1280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557B2 #A4B257

analogous

#5777B2 #6557B2 #9357B2

triadic

#6557B2 #B26557 #57B265

tetradic

#6557B2 #B25777 #A4B257 #57B293

square

#6557B2 #B25777 #A4B257 #57B293

split-complementary

#6557B2 #B29357 #77B257

monochromatic

#352D62 #4C408C #6557B2 #8B81C5 #B2ABD8

Accessibility & contrast

On white

5.90

#6557B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#6557B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557B2

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557B2	#FFFFFF	#000000	##FFFFFF
##6557B2	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F66B5

Deuteranopia (green-blind)

#2F62B0

Tritanopia (blue-blind)

#4E6A7C

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #6557b2;
/* rgb */ color: rgb(101, 87, 178);
/* oklch */ color: oklch(51.6% 0.139 287.5);

Tailwind

colors: {
  custom: {
    50: '#9586c9',
    500: '#6557b2',
    950: '#000000',
  },
}

SCSS

$custom: #6557b2;
$custom-light: #9586c9;
$custom-dark: #000000;

JSON

{
  "hex": "#6557b2",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 178
  },
  "hsl": {
    "h": 249.231,
    "s": 37.143,
    "l": 51.961
  },
  "oklch": {
    "l": 0.51553,
    "c": 0.13917,
    "h": 287.5
  },
  "luminance": 0.12797
}

Semantic roles & 50–950 ramp

primary

#6557B2

secondary

#C0C69E

accent

#CD5BBC

background

#F9F8FC

surface

#F2EFF8

border

#CCCAD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #6557B2

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

Preview Lab → · Contrast checker → · Palette generator →