#555BD1#555BD1

#555BD1 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.2% C 0.179 H 276.3°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#555BD1
RGB	rgb(85, 91, 209)
HSL	hsl(237, 57%, 58%)
HSV	hsv(237, 59%, 82%)
CMYK	cmyk(59.3%, 56.5%, 0%, 18%)
CIE-LAB	lab(44.26, 32.59, -61.89)
CIE-LCH	lch(44.26, 69.95, 297.77°)
OKLab	oklab(53.24% 0.0196 -0.1777)
OKLCH	oklch(53.24% 0.179 276.3)
XYZ	xyz(18.9923, 14.0155, 62.0137)
Luminance	0.1402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BD1 #D1CB55

analogous

#5599D1 #555BD1 #8D55D1

triadic

#555BD1 #D1555B #5BD155

tetradic

#555BD1 #D15599 #D1CB55 #55D18D

square

#555BD1 #D15599 #D1CB55 #55D18D

split-complementary

#555BD1 #D18D55 #99D155

monochromatic

#252987 #3238B7 #555BD1 #8589DE #B5B8EB

Accessibility & contrast

On white

5.52

#555BD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#555BD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BD1

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BD1	#FFFFFF	#000000	##FFFFFF
##555BD1	1.00	5.52	3.80	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED5

Deuteranopia (green-blind)

#0063CF

Tritanopia (blue-blind)

#00778D

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #555bd1;
/* rgb */ color: rgb(85, 91, 209);
/* oklch */ color: oklch(53.2% 0.179 276.3);

Tailwind

colors: {
  custom: {
    50: '#9089e0',
    500: '#555bd1',
    950: '#000000',
  },
}

SCSS

$custom: #555bd1;
$custom-light: #9089e0;
$custom-dark: #000000;

JSON

{
  "hex": "#555bd1",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 209
  },
  "hsl": {
    "h": 237.097,
    "s": 57.407,
    "l": 57.647
  },
  "oklch": {
    "l": 0.5324,
    "c": 0.17874,
    "h": 276.3
  },
  "luminance": 0.14017
}

Semantic roles & 50–950 ramp

primary

#555BD1

secondary

#DAD7A8

accent

#D947E1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #555BD1

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

Preview Lab → · Contrast checker → · Palette generator →