#555DB0#555DB0

#555DB0 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.3% C 0.130 H 276.6°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#555DB0
RGB	rgb(85, 93, 176)
HSL	hsl(235, 37%, 51%)
HSV	hsv(235, 52%, 69%)
CMYK	cmyk(51.7%, 47.2%, 0%, 31%)
CIE-LAB	lab(42.60, 20.54, -45.40)
CIE-LCH	lch(42.60, 49.83, 294.35°)
OKLab	oklab(51.31% 0.0151 -0.1291)
OKLCH	oklch(51.31% 0.13 276.6)
XYZ	xyz(15.4947, 12.8936, 42.7381)
Luminance	0.1290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555DB0 #B0A855

analogous

#558AB0 #555DB0 #7A55B0

triadic

#555DB0 #B0555D #5DB055

tetradic

#555DB0 #B0558A #B0A855 #55B07A

square

#555DB0 #B0558A #B0A855 #55B07A

split-complementary

#555DB0 #B07A55 #8AB055

monochromatic

#2C305F #3F4688 #555DB0 #7F85C3 #A9ADD7

Accessibility & contrast

On white

5.87

#555DB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#555DB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555DB0

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555DB0	#FFFFFF	#000000	##FFFFFF
##555DB0	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3868B3

Deuteranopia (green-blind)

#2F61AE

Tritanopia (blue-blind)

#2F6F7E

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555db0;
/* rgb */ color: rgb(85, 93, 176);
/* oklch */ color: oklch(51.3% 0.130 276.6);

Tailwind

colors: {
  custom: {
    50: '#8b8ac8',
    500: '#555db0',
    950: '#000000',
  },
}

SCSS

$custom: #555db0;
$custom-light: #8b8ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#555db0",
  "rgb": {
    "r": 85,
    "g": 93,
    "b": 176
  },
  "hsl": {
    "h": 234.725,
    "s": 36.546,
    "l": 51.176
  },
  "oklch": {
    "l": 0.51307,
    "c": 0.13001,
    "h": 276.6
  },
  "luminance": 0.12895
}

Semantic roles & 50–950 ramp

primary

#555DB0

secondary

#C5C19C

accent

#C35BCD

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #555DB0

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

Preview Lab → · Contrast checker → · Palette generator →