#5551CC#5551CC

#5551CC is a mid, vivid blue. Relative luminance 0.122; OKLCH L 51.1% C 0.185 H 279.1°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#5551CC
RGB	rgb(85, 81, 204)
HSL	hsl(242, 55%, 56%)
HSV	hsv(242, 60%, 80%)
CMYK	cmyk(58.3%, 60.3%, 0%, 20%)
CIE-LAB	lab(41.49, 37.09, -63.50)
CIE-LCH	lch(41.49, 73.54, 300.29°)
OKLab	oklab(51.08% 0.0291 -0.1825)
OKLCH	oklch(51.08% 0.185 279.1)
XYZ	xyz(17.5844, 12.1745, 58.5383)
Luminance	0.1218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5551CC #C8CC51

analogous

#518ACC #5551CC #9251CC

triadic

#5551CC #CC5551 #51CC55

tetradic

#5551CC #CC518A #C8CC51 #51CC92

square

#5551CC #CC518A #C8CC51 #51CC92

split-complementary

#5551CC #CC9251 #8ACC51

monochromatic

#28257E #3733AD #5551CC #8380DA #B1B0E8

Accessibility & contrast

On white

6.11

#5551CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#5551CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5551CC

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5551CC	#FFFFFF	#000000	##FFFFFF
##5551CC	1.00	6.11	3.44	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D0

Deuteranopia (green-blind)

#005DCA

Tritanopia (blue-blind)

#006F87

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #5551cc;
/* rgb */ color: rgb(85, 81, 204);
/* oklch */ color: oklch(51.1% 0.185 279.1);

Tailwind

colors: {
  custom: {
    50: '#9082dc',
    500: '#5551cc',
    950: '#000000',
  },
}

SCSS

$custom: #5551cc;
$custom-light: #9082dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5551cc",
  "rgb": {
    "r": 85,
    "g": 81,
    "b": 204
  },
  "hsl": {
    "h": 241.951,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.5108,
    "c": 0.18477,
    "h": 279.1
  },
  "luminance": 0.12176
}

Semantic roles & 50–950 ramp

primary

#5551CC

secondary

#D4D6A3

accent

#DE4AD9

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0A15

muted

#7E7C83

Preview Lab

Preview with #5551CC

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

Preview Lab → · Contrast checker → · Palette generator →