#5555CC#5555CC

#5555CC is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.8% C 0.180 H 278.1°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#5555CC
RGB	rgb(85, 85, 204)
HSL	hsl(240, 54%, 57%)
HSV	hsv(240, 58%, 80%)
CMYK	cmyk(58.3%, 58.3%, 0%, 20%)
CIE-LAB	lab(42.44, 34.65, -61.96)
CIE-LCH	lch(42.44, 70.99, 299.22°)
OKLab	oklab(51.78% 0.0253 -0.1779)
OKLCH	oklch(51.78% 0.18 278.1)
XYZ	xyz(17.8904, 12.7866, 58.6404)
Luminance	0.1279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5555CC #CCCC55

analogous

#5591CC #5555CC #9155CC

triadic

#5555CC #CC5555 #55CC55

tetradic

#5555CC #CC5591 #CCCC55 #55CC91

square

#5555CC #CC5591 #CCCC55 #55CC91

split-complementary

#5555CC #CC9155 #91CC55

monochromatic

#262680 #3535AF #5555CC #8484DA #B3B3E8

Accessibility & contrast

On white

5.90

#5555CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#5555CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5555CC

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5555CC	#FFFFFF	#000000	##FFFFFF
##5555CC	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D0

Deuteranopia (green-blind)

#005FCA

Tritanopia (blue-blind)

#007188

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #5555cc;
/* rgb */ color: rgb(85, 85, 204);
/* oklch */ color: oklch(51.8% 0.180 278.1);

Tailwind

colors: {
  custom: {
    50: '#9085dc',
    500: '#5555cc',
    950: '#000000',
  },
}

SCSS

$custom: #5555cc;
$custom-light: #9085dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5555cc",
  "rgb": {
    "r": 85,
    "g": 85,
    "b": 204
  },
  "hsl": {
    "h": 240,
    "s": 53.846,
    "l": 56.667
  },
  "oklch": {
    "l": 0.51779,
    "c": 0.17971,
    "h": 278.1
  },
  "luminance": 0.12788
}

Semantic roles & 50–950 ramp

primary

#5555CC

secondary

#D7D7A6

accent

#DD4BDD

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #5555CC

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

Preview Lab → · Contrast checker → · Palette generator →