#555DB1#555DB1

#555DB1 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.4% C 0.131 H 276.6°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#555DB1
RGB	rgb(85, 93, 177)
HSL	hsl(235, 37%, 51%)
HSV	hsv(235, 52%, 69%)
CMYK	cmyk(52%, 47.5%, 0%, 30.6%)
CIE-LAB	lab(42.66, 20.87, -45.89)
CIE-LCH	lch(42.66, 50.41, 294.45°)
OKLab	oklab(51.37% 0.0152 -0.1306)
OKLCH	oklch(51.37% 0.131 276.6)
XYZ	xyz(15.5940, 12.9334, 43.2611)
Luminance	0.1293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555DB1 #B1A955

analogous

#558BB1 #555DB1 #7B55B1

triadic

#555DB1 #B1555D #5DB155

tetradic

#555DB1 #B1558B #B1A955 #55B17B

square

#555DB1 #B1558B #B1A955 #55B17B

split-complementary

#555DB1 #B17B55 #8BB155

monochromatic

#2C3060 #3F468A #555DB1 #7F85C4 #A9ADD7

Accessibility & contrast

On white

5.85

#555DB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#555DB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555DB1

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555DB1	#FFFFFF	#000000	##FFFFFF
##555DB1	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3869B4

Deuteranopia (green-blind)

#2E61AF

Tritanopia (blue-blind)

#2E6F7E

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555db1;
/* rgb */ color: rgb(85, 93, 177);
/* oklch */ color: oklch(51.4% 0.131 276.6);

Tailwind

colors: {
  custom: {
    50: '#8b8ac9',
    500: '#555db1',
    950: '#000000',
  },
}

SCSS

$custom: #555db1;
$custom-light: #8b8ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#555db1",
  "rgb": {
    "r": 85,
    "g": 93,
    "b": 177
  },
  "hsl": {
    "h": 234.783,
    "s": 37.097,
    "l": 51.373
  },
  "oklch": {
    "l": 0.51372,
    "c": 0.13146,
    "h": 276.6
  },
  "luminance": 0.12934
}

Semantic roles & 50–950 ramp

primary

#555DB1

secondary

#C5C29D

accent

#C35BCD

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #555DB1

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

Preview Lab → · Contrast checker → · Palette generator →