#6557CE#6557CE

#6557CE is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.5% C 0.177 H 284.0°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#6557CE
RGB	rgb(101, 87, 206)
HSL	hsl(247, 55%, 57%)
HSV	hsv(247, 58%, 81%)
CMYK	cmyk(51%, 57.8%, 0%, 19.2%)
CIE-LAB	lab(44.29, 37.10, -60.06)
CIE-LCH	lch(44.29, 70.60, 301.70°)
OKLab	oklab(53.5% 0.0429 -0.1719)
OKLCH	oklch(53.5% 0.177 284)
XYZ	xyz(19.9123, 14.0383, 60.0410)
Luminance	0.1404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557CE #C0CE57

analogous

#5784CE #6557CE #A157CE

triadic

#6557CE #CE6557 #57CE65

tetradic

#6557CE #CE5784 #C0CE57 #57CEA1

square

#6557CE #CE5784 #C0CE57 #57CEA1

split-complementary

#6557CE #CEA157 #84CE57

monochromatic

#322784 #4334B3 #6557CE #9086DC #BCB6EA

Accessibility & contrast

On white

5.51

#6557CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#6557CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557CE

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557CE	#FFFFFF	#000000	##FFFFFF
##6557CE	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD2

Deuteranopia (green-blind)

#0065CC

Tritanopia (blue-blind)

#3C728A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #6557ce;
/* rgb */ color: rgb(101, 87, 206);
/* oklch */ color: oklch(53.5% 0.177 284.0);

Tailwind

colors: {
  custom: {
    50: '#9987de',
    500: '#6557ce',
    950: '#000000',
  },
}

SCSS

$custom: #6557ce;
$custom-light: #9987de;
$custom-dark: #000000;

JSON

{
  "hex": "#6557ce",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 206
  },
  "hsl": {
    "h": 247.059,
    "s": 54.839,
    "l": 57.451
  },
  "oklch": {
    "l": 0.535,
    "c": 0.17712,
    "h": 284
  },
  "luminance": 0.14039
}

Semantic roles & 50–950 ramp

primary

#6557CE

secondary

#D3D8A8

accent

#DE4ACD

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0F0B15

muted

#7E7C83

Preview Lab

Preview with #6557CE

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

Preview Lab → · Contrast checker → · Palette generator →