#555FB5#555FB5

#555FB5 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.0% C 0.134 H 275.7°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#555FB5
RGB	rgb(85, 95, 181)
HSL	hsl(234, 39%, 52%)
HSV	hsv(234, 53%, 71%)
CMYK	cmyk(53%, 47.5%, 0%, 29%)
CIE-LAB	lab(43.43, 20.90, -47.00)
CIE-LCH	lch(43.43, 51.44, 293.98°)
OKLab	oklab(52.04% 0.0134 -0.1338)
OKLCH	oklch(52.04% 0.134 275.7)
XYZ	xyz(16.1764, 13.4509, 45.4510)
Luminance	0.1345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555FB5 #B5AB55

analogous

#558FB5 #555FB5 #7B55B5

triadic

#555FB5 #B5555F #5FB555

tetradic

#555FB5 #B5558F #B5AB55 #55B57B

square

#555FB5 #B5558F #B5AB55 #55B57B

split-complementary

#555FB5 #B57B55 #8FB555

monochromatic

#2C3164 #3E478F #555FB5 #8087C8 #AAAFDA

Accessibility & contrast

On white

5.69

#555FB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#555FB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555FB5

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555FB5	#FFFFFF	#000000	##FFFFFF
##555FB5	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386BB8

Deuteranopia (green-blind)

#2D63B3

Tritanopia (blue-blind)

#2A7281

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #555fb5;
/* rgb */ color: rgb(85, 95, 181);
/* oklch */ color: oklch(52.0% 0.134 275.7);

Tailwind

colors: {
  custom: {
    50: '#8c8ccc',
    500: '#555fb5',
    950: '#000000',
  },
}

SCSS

$custom: #555fb5;
$custom-light: #8c8ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#555fb5",
  "rgb": {
    "r": 85,
    "g": 95,
    "b": 181
  },
  "hsl": {
    "h": 233.75,
    "s": 39.344,
    "l": 52.157
  },
  "oklch": {
    "l": 0.52035,
    "c": 0.13449,
    "h": 275.7
  },
  "luminance": 0.13452
}

Semantic roles & 50–950 ramp

primary

#555FB5

secondary

#C8C39E

accent

#C359CF

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0D0C13

muted

#7D7D82

Preview Lab

Preview with #555FB5

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

Preview Lab → · Contrast checker → · Palette generator →