#555DD1#555DD1

#555DD1 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.6% C 0.176 H 275.7°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#555DD1
RGB	rgb(85, 93, 209)
HSL	hsl(236, 57%, 58%)
HSV	hsv(236, 59%, 82%)
CMYK	cmyk(59.3%, 55.5%, 0%, 18%)
CIE-LAB	lab(44.75, 31.36, -61.10)
CIE-LCH	lch(44.75, 68.67, 297.17°)
OKLab	oklab(53.61% 0.0176 -0.1753)
OKLCH	oklch(53.61% 0.176 275.7)
XYZ	xyz(19.1656, 14.3620, 62.0714)
Luminance	0.1436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555DD1 #D1C955

analogous

#559BD1 #555DD1 #8B55D1

triadic

#555DD1 #D1555D #5DD155

tetradic

#555DD1 #D1559B #D1C955 #55D18B

square

#555DD1 #D1559B #D1C955 #55D18B

split-complementary

#555DD1 #D18B55 #9BD155

monochromatic

#252B87 #323AB7 #555DD1 #858BDE #B5B9EB

Accessibility & contrast

On white

5.42

#555DD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#555DD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555DD1

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555DD1	#FFFFFF	#000000	##FFFFFF
##555DD1	1.00	5.42	3.87	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD5

Deuteranopia (green-blind)

#0065CF

Tritanopia (blue-blind)

#00788E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #555dd1;
/* rgb */ color: rgb(85, 93, 209);
/* oklch */ color: oklch(53.6% 0.176 275.7);

Tailwind

colors: {
  custom: {
    50: '#908ae0',
    500: '#555dd1',
    950: '#000000',
  },
}

SCSS

$custom: #555dd1;
$custom-light: #908ae0;
$custom-dark: #000000;

JSON

{
  "hex": "#555dd1",
  "rgb": {
    "r": 85,
    "g": 93,
    "b": 209
  },
  "hsl": {
    "h": 236.129,
    "s": 57.407,
    "l": 57.647
  },
  "oklch": {
    "l": 0.53607,
    "c": 0.17619,
    "h": 275.7
  },
  "luminance": 0.14363
}

Semantic roles & 50–950 ramp

primary

#555DD1

secondary

#DAD7A8

accent

#D747E1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #555DD1

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

Preview Lab → · Contrast checker → · Palette generator →