#555DB7#555DB7

#555DB7 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.8% C 0.140 H 276.5°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#555DB7
RGB	rgb(85, 93, 183)
HSL	hsl(235, 40%, 53%)
HSV	hsv(235, 54%, 72%)
CMYK	cmyk(53.6%, 49.2%, 0%, 28.2%)
CIE-LAB	lab(43.03, 22.81, -48.82)
CIE-LCH	lch(43.03, 53.88, 295.05°)
OKLab	oklab(51.77% 0.0159 -0.1392)
OKLCH	oklch(51.77% 0.14 276.5)
XYZ	xyz(16.2052, 13.1778, 46.4802)
Luminance	0.1318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555DB7 #B7AF55

analogous

#558EB7 #555DB7 #7E55B7

triadic

#555DB7 #B7555D #5DB755

tetradic

#555DB7 #B7558E #B7AF55 #55B77E

square

#555DB7 #B7558E #B7AF55 #55B77E

split-complementary

#555DB7 #B77E55 #8EB755

monochromatic

#2B3066 #3E4491 #555DB7 #8086C9 #ABAFDB

Accessibility & contrast

On white

5.78

#555DB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#555DB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555DB7

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555DB7	#FFFFFF	#000000	##FFFFFF
##555DB7	1.00	5.78	3.64	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#326ABA

Deuteranopia (green-blind)

#2662B5

Tritanopia (blue-blind)

#287181

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #555db7;
/* rgb */ color: rgb(85, 93, 183);
/* oklch */ color: oklch(51.8% 0.140 276.5);

Tailwind

colors: {
  custom: {
    50: '#8c8acd',
    500: '#555db7',
    950: '#000000',
  },
}

SCSS

$custom: #555db7;
$custom-light: #8c8acd;
$custom-dark: #000000;

JSON

{
  "hex": "#555db7",
  "rgb": {
    "r": 85,
    "g": 93,
    "b": 183
  },
  "hsl": {
    "h": 235.102,
    "s": 40.496,
    "l": 52.549
  },
  "oklch": {
    "l": 0.51769,
    "c": 0.14008,
    "h": 276.5
  },
  "luminance": 0.13179
}

Semantic roles & 50–950 ramp

primary

#555DB7

secondary

#C9C69F

accent

#C657D0

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B13

muted

#7E7C82

Preview Lab

Preview with #555DB7

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

Preview Lab → · Contrast checker → · Palette generator →