#555DBC#555DBC

#555DBC is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.1% C 0.147 H 276.4°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#555DBC
RGB	rgb(85, 93, 188)
HSL	hsl(235, 43%, 54%)
HSV	hsv(235, 55%, 74%)
CMYK	cmyk(54.8%, 50.5%, 0%, 26.3%)
CIE-LAB	lab(43.34, 24.45, -51.23)
CIE-LCH	lch(43.34, 56.76, 295.51°)
OKLab	oklab(52.11% 0.0164 -0.1463)
OKLCH	oklch(52.11% 0.147 276.4)
XYZ	xyz(16.7349, 13.3897, 49.2698)
Luminance	0.1339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555DBC #BCB455

analogous

#5590BC #555DBC #8055BC

triadic

#555DBC #BC555D #5DBC55

tetradic

#555DBC #BC5590 #BCB455 #55BC80

square

#555DBC #BC5590 #BCB455 #55BC80

split-complementary

#555DBC #BC8055 #90BC55

monochromatic

#2B306C #3C4398 #555DBC #8187CD #ADB1DF

Accessibility & contrast

On white

5.71

#555DBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#555DBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555DBC

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555DBC	#FFFFFF	#000000	##FFFFFF
##555DBC	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D6BBF

Deuteranopia (green-blind)

#1E62BA

Tritanopia (blue-blind)

#227284

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #555dbc;
/* rgb */ color: rgb(85, 93, 188);
/* oklch */ color: oklch(52.1% 0.147 276.4);

Tailwind

colors: {
  custom: {
    50: '#8d8ad1',
    500: '#555dbc',
    950: '#000000',
  },
}

SCSS

$custom: #555dbc;
$custom-light: #8d8ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#555dbc",
  "rgb": {
    "r": 85,
    "g": 93,
    "b": 188
  },
  "hsl": {
    "h": 235.34,
    "s": 43.46,
    "l": 53.529
  },
  "oklch": {
    "l": 0.52107,
    "c": 0.14719,
    "h": 276.4
  },
  "luminance": 0.13391
}

Semantic roles & 50–950 ramp

primary

#555DBC

secondary

#CCC9A0

accent

#C955D3

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #555DBC

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

Preview Lab → · Contrast checker → · Palette generator →