#555BC1#555BC1

#555BC1 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.1% C 0.157 H 276.9°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#555BC1
RGB	rgb(85, 91, 193)
HSL	hsl(237, 47%, 55%)
HSV	hsv(237, 56%, 76%)
CMYK	cmyk(56%, 52.8%, 0%, 24.3%)
CIE-LAB	lab(43.16, 27.34, -54.44)
CIE-LCH	lch(43.16, 60.92, 296.66°)
OKLab	oklab(52.07% 0.0189 -0.1557)
OKLCH	oklch(52.07% 0.157 276.9)
XYZ	xyz(17.1100, 13.2626, 52.1001)
Luminance	0.1326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BC1 #C1BB55

analogous

#5591C1 #555BC1 #8555C1

triadic

#555BC1 #C1555B #5BC155

tetradic

#555BC1 #C15591 #C1BB55 #55C185

square

#555BC1 #C15591 #C1BB55 #55C185

split-complementary

#555BC1 #C18555 #91C155

monochromatic

#2A2E72 #3A409F #555BC1 #8286D1 #AFB2E2

Accessibility & contrast

On white

5.75

#555BC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#555BC1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BC1

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BC1	#FFFFFF	#000000	##FFFFFF
##555BC1	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#206AC5

Deuteranopia (green-blind)

#0662BF

Tritanopia (blue-blind)

#1B7285

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #555bc1;
/* rgb */ color: rgb(85, 91, 193);
/* oklch */ color: oklch(52.1% 0.157 276.9);

Tailwind

colors: {
  custom: {
    50: '#8e89d4',
    500: '#555bc1',
    950: '#000000',
  },
}

SCSS

$custom: #555bc1;
$custom-light: #8e89d4;
$custom-dark: #000000;

JSON

{
  "hex": "#555bc1",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 193
  },
  "hsl": {
    "h": 236.667,
    "s": 46.552,
    "l": 54.51
  },
  "oklch": {
    "l": 0.5207,
    "c": 0.15688,
    "h": 276.9
  },
  "luminance": 0.13264
}

Semantic roles & 50–950 ramp

primary

#555BC1

secondary

#D0CDA2

accent

#CF52D6

background

#F9F8FD

surface

#F1F0FA

border

#CBCBD3

text

#0D0B14

muted

#7E7C83

Preview Lab

Preview with #555BC1

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

Preview Lab → · Contrast checker → · Palette generator →