#555AD1#555AD1

#555AD1 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 53.1% C 0.180 H 276.5°. Best body text is #FFFFFF at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#555AD1
RGB	rgb(85, 90, 209)
HSL	hsl(238, 57%, 58%)
HSV	hsv(238, 59%, 82%)
CMYK	cmyk(59.3%, 56.9%, 0%, 18%)
CIE-LAB	lab(44.01, 33.21, -62.29)
CIE-LCH	lch(44.01, 70.59, 298.06°)
OKLab	oklab(53.06% 0.0205 -0.1788)
OKLCH	oklch(53.06% 0.18 276.5)
XYZ	xyz(18.9074, 13.8457, 61.9854)
Luminance	0.1385 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555AD1 #D1CC55

analogous

#5598D1 #555AD1 #8E55D1

triadic

#555AD1 #D1555A #5AD155

tetradic

#555AD1 #D15598 #D1CC55 #55D18E

square

#555AD1 #D15598 #D1CC55 #55D18E

split-complementary

#555AD1 #D18E55 #98D155

monochromatic

#252987 #3237B7 #555AD1 #8589DE #B5B7EB

Accessibility & contrast

On white

5.57

#555AD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#555AD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555AD1

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555AD1	#FFFFFF	#000000	##FFFFFF
##555AD1	1.00	5.57	3.77	5.57
#FFFFFF	5.57	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD5

Deuteranopia (green-blind)

#0063CF

Tritanopia (blue-blind)

#00768D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #555ad1;
/* rgb */ color: rgb(85, 90, 209);
/* oklch */ color: oklch(53.1% 0.180 276.5);

Tailwind

colors: {
  custom: {
    50: '#9088e0',
    500: '#555ad1',
    950: '#000000',
  },
}

SCSS

$custom: #555ad1;
$custom-light: #9088e0;
$custom-dark: #000000;

JSON

{
  "hex": "#555ad1",
  "rgb": {
    "r": 85,
    "g": 90,
    "b": 209
  },
  "hsl": {
    "h": 237.581,
    "s": 57.407,
    "l": 57.647
  },
  "oklch": {
    "l": 0.53058,
    "c": 0.18002,
    "h": 276.5
  },
  "luminance": 0.13847
}

Semantic roles & 50–950 ramp

primary

#555AD1

secondary

#DAD8A8

accent

#DA47E1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #555AD1

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

Preview Lab → · Contrast checker → · Palette generator →