#6551CB#6551CB

#6551CB is a mid, vivid blue. Relative luminance 0.130; OKLCH L 52.3% C 0.181 H 285.8°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#6551CB
RGB	rgb(101, 81, 203)
HSL	hsl(250, 54%, 56%)
HSV	hsv(250, 60%, 80%)
CMYK	cmyk(50.2%, 60.1%, 0%, 20.4%)
CIE-LAB	lab(42.71, 39.75, -60.89)
CIE-LCH	lch(42.71, 72.72, 303.13°)
OKLab	oklab(52.27% 0.0493 -0.1743)
OKLCH	oklch(52.27% 0.181 285.8)
XYZ	xyz(19.0856, 12.9624, 57.9847)
Luminance	0.1296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6551CB #B7CB51

analogous

#517ACB #6551CB #A251CB

triadic

#6551CB #CB6551 #51CB65

tetradic

#6551CB #CB517A #B7CB51 #51CBA2

square

#6551CB #CB517A #B7CB51 #51CBA2

split-complementary

#6551CB #CBA251 #7ACB51

monochromatic

#33257C #4733AC #6551CB #8F80D9 #B8AFE7

Accessibility & contrast

On white

5.85

#6551CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#6551CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6551CB

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6551CB	#FFFFFF	#000000	##FFFFFF
##6551CB	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CF

Deuteranopia (green-blind)

#0061C8

Tritanopia (blue-blind)

#3F6E86

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #6551cb;
/* rgb */ color: rgb(101, 81, 203);
/* oklch */ color: oklch(52.3% 0.181 285.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#6551cb",
  "rgb": {
    "r": 101,
    "g": 81,
    "b": 203
  },
  "hsl": {
    "h": 249.836,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.5227,
    "c": 0.18117,
    "h": 285.8
  },
  "luminance": 0.12963
}

Semantic roles & 50–950 ramp

primary

#6551CB

secondary

#CDD5A3

accent

#DD4AC5

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0F0A15

muted

#7E7C83

Preview Lab

Preview with #6551CB

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

Preview Lab → · Contrast checker → · Palette generator →