#555BD3#555BD3

#555BD3 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.4% C 0.181 H 276.2°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#555BD3
RGB	rgb(85, 91, 211)
HSL	hsl(237, 59%, 58%)
HSV	hsv(237, 60%, 83%)
CMYK	cmyk(59.7%, 56.9%, 0%, 17.3%)
CIE-LAB	lab(44.40, 33.25, -62.81)
CIE-LCH	lch(44.40, 71.07, 297.90°)
OKLab	oklab(53.39% 0.0196 -0.1804)
OKLCH	oklch(53.39% 0.181 276.2)
XYZ	xyz(19.2415, 14.1151, 63.3259)
Luminance	0.1412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BD3 #D3CD55

analogous

#559AD3 #555BD3 #8E55D3

triadic

#555BD3 #D3555B #5BD355

tetradic

#555BD3 #D3559A #D3CD55 #55D38E

square

#555BD3 #D3559A #D3CD55 #55D38E

split-complementary

#555BD3 #D38E55 #9AD355

monochromatic

#24298A #3037BB #555BD3 #868AE0 #B6B9EC

Accessibility & contrast

On white

5.49

#555BD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#555BD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BD3

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BD3	#FFFFFF	#000000	##FFFFFF
##555BD3	1.00	5.49	3.82	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED7

Deuteranopia (green-blind)

#0064D1

Tritanopia (blue-blind)

#00788E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #555bd3;
/* rgb */ color: rgb(85, 91, 211);
/* oklch */ color: oklch(53.4% 0.181 276.2);

Tailwind

colors: {
  custom: {
    50: '#9089e1',
    500: '#555bd3',
    950: '#000000',
  },
}

SCSS

$custom: #555bd3;
$custom-light: #9089e1;
$custom-dark: #000000;

JSON

{
  "hex": "#555bd3",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 211
  },
  "hsl": {
    "h": 237.143,
    "s": 58.879,
    "l": 58.039
  },
  "oklch": {
    "l": 0.53391,
    "c": 0.18143,
    "h": 276.2
  },
  "luminance": 0.14117
}

Semantic roles & 50–950 ramp

primary

#555BD3

secondary

#DBD9A9

accent

#DB46E2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #555BD3

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

Preview Lab → · Contrast checker → · Palette generator →