#555CD3#555CD3

#555CD3 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.6% C 0.180 H 275.9°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#555CD3
RGB	rgb(85, 92, 211)
HSL	hsl(237, 59%, 58%)
HSV	hsv(237, 60%, 83%)
CMYK	cmyk(59.7%, 56.4%, 0%, 17.3%)
CIE-LAB	lab(44.64, 32.64, -62.41)
CIE-LCH	lch(44.64, 70.43, 297.60°)
OKLab	oklab(53.57% 0.0186 -0.1792)
OKLCH	oklch(53.57% 0.18 275.9)
XYZ	xyz(19.3275, 14.2873, 63.3546)
Luminance	0.1429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555CD3 #D3CC55

analogous

#559BD3 #555CD3 #8D55D3

triadic

#555CD3 #D3555C #5CD355

tetradic

#555CD3 #D3559B #D3CC55 #55D38D

square

#555CD3 #D3559B #D3CC55 #55D38D

split-complementary

#555CD3 #D38D55 #9BD355

monochromatic

#24298A #3038BB #555CD3 #868BE0 #B6B9EC

Accessibility & contrast

On white

5.44

#555CD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#555CD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555CD3

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555CD3	#FFFFFF	#000000	##FFFFFF
##555CD3	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD7

Deuteranopia (green-blind)

#0064D1

Tritanopia (blue-blind)

#00788E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #555cd3;
/* rgb */ color: rgb(85, 92, 211);
/* oklch */ color: oklch(53.6% 0.180 275.9);

Tailwind

colors: {
  custom: {
    50: '#908ae1',
    500: '#555cd3',
    950: '#000000',
  },
}

SCSS

$custom: #555cd3;
$custom-light: #908ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#555cd3",
  "rgb": {
    "r": 85,
    "g": 92,
    "b": 211
  },
  "hsl": {
    "h": 236.667,
    "s": 58.879,
    "l": 58.039
  },
  "oklch": {
    "l": 0.53573,
    "c": 0.18016,
    "h": 275.9
  },
  "luminance": 0.14289
}

Semantic roles & 50–950 ramp

primary

#555CD3

secondary

#DBD8A9

accent

#D946E2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #555CD3

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

Preview Lab → · Contrast checker → · Palette generator →