#6557CB#6557CB

#6557CB is a mid, vivid blue. Relative luminance 0.139; OKLCH L 53.3% C 0.173 H 284.3°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#6557CB
RGB	rgb(101, 87, 203)
HSL	hsl(247, 53%, 57%)
HSV	hsv(247, 57%, 80%)
CMYK	cmyk(50.2%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(44.08, 36.19, -58.67)
CIE-LCH	lch(44.08, 68.93, 301.67°)
OKLab	oklab(53.28% 0.0429 -0.1678)
OKLCH	oklch(53.28% 0.173 284.3)
XYZ	xyz(19.5513, 13.8939, 58.1399)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557CB #BDCB57

analogous

#5783CB #6557CB #9F57CB

triadic

#6557CB #CB6557 #57CB65

tetradic

#6557CB #CB5783 #BDCB57 #57CB9F

square

#6557CB #CB5783 #BDCB57 #57CB9F

split-complementary

#6557CB #CB9F57 #83CB57

monochromatic

#322880 #4536AF #6557CB #9086D9 #BBB4E8

Accessibility & contrast

On white

5.56

#6557CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#6557CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557CB

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557CB	#FFFFFF	#000000	##FFFFFF
##6557CB	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CCF

Deuteranopia (green-blind)

#0065C9

Tritanopia (blue-blind)

#3F7188

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #6557cb;
/* rgb */ color: rgb(101, 87, 203);
/* oklch */ color: oklch(53.3% 0.173 284.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#6557cb",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 247.241,
    "s": 52.727,
    "l": 56.863
  },
  "oklch": {
    "l": 0.53281,
    "c": 0.17317,
    "h": 284.3
  },
  "luminance": 0.13895
}

Semantic roles & 50–950 ramp

primary

#6557CB

secondary

#D1D7A7

accent

#DC4CCB

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #6557CB

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

Preview Lab → · Contrast checker → · Palette generator →