#6551CC#6551CC

#6551CC is a mid, vivid blue. Relative luminance 0.130; OKLCH L 52.3% C 0.182 H 285.7°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#6551CC
RGB	rgb(101, 81, 204)
HSL	hsl(250, 55%, 56%)
HSV	hsv(250, 60%, 80%)
CMYK	cmyk(50.5%, 60.3%, 0%, 20%)
CIE-LAB	lab(42.78, 40.05, -61.35)
CIE-LCH	lch(42.78, 73.27, 303.13°)
OKLab	oklab(52.35% 0.0493 -0.1757)
OKLCH	oklch(52.35% 0.182 285.7)
XYZ	xyz(19.2051, 13.0102, 58.6143)
Luminance	0.1301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6551CC #B8CC51

analogous

#517ACC #6551CC #A251CC

triadic

#6551CC #CC6551 #51CC65

tetradic

#6551CC #CC517A #B8CC51 #51CCA2

square

#6551CC #CC517A #B8CC51 #51CCA2

split-complementary

#6551CC #CCA251 #7ACC51

monochromatic

#33257E #4733AD #6551CC #8F80DA #B9B0E8

Accessibility & contrast

On white

5.83

#6551CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#6551CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6551CC

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6551CC	#FFFFFF	#000000	##FFFFFF
##6551CC	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D0

Deuteranopia (green-blind)

#0061C9

Tritanopia (blue-blind)

#3F6E87

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #6551cc;
/* rgb */ color: rgb(101, 81, 204);
/* oklch */ color: oklch(52.3% 0.182 285.7);

Tailwind

colors: {
  custom: {
    50: '#9983dc',
    500: '#6551cc',
    950: '#000000',
  },
}

SCSS

$custom: #6551cc;
$custom-light: #9983dc;
$custom-dark: #000000;

JSON

{
  "hex": "#6551cc",
  "rgb": {
    "r": 101,
    "g": 81,
    "b": 204
  },
  "hsl": {
    "h": 249.756,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.52346,
    "c": 0.18247,
    "h": 285.7
  },
  "luminance": 0.13011
}

Semantic roles & 50–950 ramp

primary

#6551CC

secondary

#CED6A3

accent

#DE4AC6

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0F0A15

muted

#7E7C83

Preview Lab

Preview with #6551CC

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

Preview Lab → · Contrast checker → · Palette generator →