#555DB5#555DB5

#555DB5 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.6% C 0.137 H 276.6°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#555DB5
RGB	rgb(85, 93, 181)
HSL	hsl(235, 39%, 52%)
HSV	hsv(235, 53%, 71%)
CMYK	cmyk(53%, 48.6%, 0%, 29%)
CIE-LAB	lab(42.91, 22.16, -47.84)
CIE-LCH	lch(42.91, 52.73, 294.85°)
OKLab	oklab(51.64% 0.0157 -0.1363)
OKLCH	oklch(51.64% 0.137 276.6)
XYZ	xyz(15.9985, 13.0952, 45.3917)
Luminance	0.1310 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555DB5 #B5AD55

analogous

#558DB5 #555DB5 #7D55B5

triadic

#555DB5 #B5555D #5DB555

tetradic

#555DB5 #B5558D #B5AD55 #55B57D

square

#555DB5 #B5558D #B5AD55 #55B57D

split-complementary

#555DB5 #B57D55 #8DB555

monochromatic

#2C3064 #3E458F #555DB5 #8086C8 #AAAEDA

Accessibility & contrast

On white

5.80

#555DB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#555DB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555DB5

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555DB5	#FFFFFF	#000000	##FFFFFF
##555DB5	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3469B8

Deuteranopia (green-blind)

#2962B3

Tritanopia (blue-blind)

#2A7080

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555db5;
/* rgb */ color: rgb(85, 93, 181);
/* oklch */ color: oklch(51.6% 0.137 276.6);

Tailwind

colors: {
  custom: {
    50: '#8c8acc',
    500: '#555db5',
    950: '#000000',
  },
}

SCSS

$custom: #555db5;
$custom-light: #8c8acc;
$custom-dark: #000000;

JSON

{
  "hex": "#555db5",
  "rgb": {
    "r": 85,
    "g": 93,
    "b": 181
  },
  "hsl": {
    "h": 235,
    "s": 39.344,
    "l": 52.157
  },
  "oklch": {
    "l": 0.51635,
    "c": 0.13723,
    "h": 276.6
  },
  "luminance": 0.13096
}

Semantic roles & 50–950 ramp

primary

#555DB5

secondary

#C8C49E

accent

#C559CF

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0D0B13

muted

#7D7C82

Preview Lab

Preview with #555DB5

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

Preview Lab → · Contrast checker → · Palette generator →