#555DB9#555DB9

#555DB9 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.9% C 0.143 H 276.5°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#555DB9
RGB	rgb(85, 93, 185)
HSL	hsl(235, 42%, 53%)
HSV	hsv(235, 54%, 73%)
CMYK	cmyk(54.1%, 49.7%, 0%, 27.5%)
CIE-LAB	lab(43.15, 23.46, -49.78)
CIE-LCH	lch(43.15, 55.04, 295.24°)
OKLab	oklab(51.9% 0.0161 -0.142)
OKLCH	oklch(51.9% 0.143 276.5)
XYZ	xyz(16.4148, 13.2617, 47.5843)
Luminance	0.1326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555DB9 #B9B155

analogous

#558FB9 #555DB9 #7F55B9

triadic

#555DB9 #B9555D #5DB955

tetradic

#555DB9 #B9558F #B9B155 #55B97F

square

#555DB9 #B9558F #B9B155 #55B97F

split-complementary

#555DB9 #B97F55 #8FB955

monochromatic

#2B3069 #3D4494 #555DB9 #8086CB #ACB0DD

Accessibility & contrast

On white

5.75

#555DB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#555DB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555DB9

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555DB9	#FFFFFF	#000000	##FFFFFF
##555DB9	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)

#306ABC

Deuteranopia (green-blind)

#2362B7

Tritanopia (blue-blind)

#257182

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #555db9;
/* rgb */ color: rgb(85, 93, 185);
/* oklch */ color: oklch(51.9% 0.143 276.5);

Tailwind

colors: {
  custom: {
    50: '#8c8acf',
    500: '#555db9',
    950: '#000000',
  },
}

SCSS

$custom: #555db9;
$custom-light: #8c8acf;
$custom-dark: #000000;

JSON

{
  "hex": "#555db9",
  "rgb": {
    "r": 85,
    "g": 93,
    "b": 185
  },
  "hsl": {
    "h": 235.2,
    "s": 41.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.51903,
    "c": 0.14294,
    "h": 276.5
  },
  "luminance": 0.13263
}

Semantic roles & 50–950 ramp

primary

#555DB9

secondary

#CBC79F

accent

#C856D1

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #555DB9

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

Preview Lab → · Contrast checker → · Palette generator →