#555FB4#555FB4

#555FB4 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.0% C 0.133 H 275.7°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#555FB4
RGB	rgb(85, 95, 180)
HSL	hsl(234, 39%, 52%)
HSV	hsv(234, 53%, 71%)
CMYK	cmyk(52.8%, 47.2%, 0%, 29.4%)
CIE-LAB	lab(43.37, 20.58, -46.51)
CIE-LCH	lch(43.37, 50.86, 293.87°)
OKLab	oklab(51.97% 0.0132 -0.1324)
OKLCH	oklch(51.97% 0.133 275.7)
XYZ	xyz(16.0741, 13.4100, 44.9125)
Luminance	0.1341 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555FB4 #B4AA55

analogous

#558FB4 #555FB4 #7B55B4

triadic

#555FB4 #B4555F #5FB455

tetradic

#555FB4 #B4558F #B4AA55 #55B47B

square

#555FB4 #B4558F #B4AA55 #55B47B

split-complementary

#555FB4 #B47B55 #8FB455

monochromatic

#2C3163 #3E478D #555FB4 #7F87C7 #AAAFD9

Accessibility & contrast

On white

5.70

#555FB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#555FB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555FB4

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555FB4	#FFFFFF	#000000	##FFFFFF
##555FB4	1.00	5.70	3.68	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396BB7

Deuteranopia (green-blind)

#2E63B2

Tritanopia (blue-blind)

#2B7281

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #555fb4;
/* rgb */ color: rgb(85, 95, 180);
/* oklch */ color: oklch(52.0% 0.133 275.7);

Tailwind

colors: {
  custom: {
    50: '#8b8ccb',
    500: '#555fb4',
    950: '#000000',
  },
}

SCSS

$custom: #555fb4;
$custom-light: #8b8ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#555fb4",
  "rgb": {
    "r": 85,
    "g": 95,
    "b": 180
  },
  "hsl": {
    "h": 233.684,
    "s": 38.776,
    "l": 51.961
  },
  "oklch": {
    "l": 0.5197,
    "c": 0.13305,
    "h": 275.7
  },
  "luminance": 0.13411
}

Semantic roles & 50–950 ramp

primary

#555FB4

secondary

#C7C39E

accent

#C259CF

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #555FB4

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

Preview Lab → · Contrast checker → · Palette generator →