#555EB0#555EB0

#555EB0 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.5% C 0.129 H 276.2°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#555EB0
RGB	rgb(85, 94, 176)
HSL	hsl(234, 37%, 51%)
HSV	hsv(234, 52%, 69%)
CMYK	cmyk(51.7%, 46.6%, 0%, 31%)
CIE-LAB	lab(42.87, 19.91, -44.97)
CIE-LCH	lch(42.87, 49.18, 293.88°)
OKLab	oklab(51.51% 0.0139 -0.1279)
OKLCH	oklch(51.51% 0.129 276.2)
XYZ	xyz(15.5830, 13.0703, 42.7676)
Luminance	0.1307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555EB0 #B0A755

analogous

#558BB0 #555EB0 #7955B0

triadic

#555EB0 #B0555E #5EB055

tetradic

#555EB0 #B0558B #B0A755 #55B079

square

#555EB0 #B0558B #B0A755 #55B079

split-complementary

#555EB0 #B07955 #8BB055

monochromatic

#2C315F #3F4788 #555EB0 #7F86C3 #A9ADD7

Accessibility & contrast

On white

5.81

#555EB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#555EB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555EB0

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555EB0	#FFFFFF	#000000	##FFFFFF
##555EB0	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A69B3

Deuteranopia (green-blind)

#3162AE

Tritanopia (blue-blind)

#2E707E

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555eb0;
/* rgb */ color: rgb(85, 94, 176);
/* oklch */ color: oklch(51.5% 0.129 276.2);

Tailwind

colors: {
  custom: {
    50: '#8b8bc8',
    500: '#555eb0',
    950: '#000000',
  },
}

SCSS

$custom: #555eb0;
$custom-light: #8b8bc8;
$custom-dark: #000000;

JSON

{
  "hex": "#555eb0",
  "rgb": {
    "r": 85,
    "g": 94,
    "b": 176
  },
  "hsl": {
    "h": 234.066,
    "s": 36.546,
    "l": 51.176
  },
  "oklch": {
    "l": 0.51509,
    "c": 0.12863,
    "h": 276.2
  },
  "luminance": 0.13071
}

Semantic roles & 50–950 ramp

primary

#555EB0

secondary

#C5C19C

accent

#C15BCD

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #555EB0

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

Preview Lab → · Contrast checker → · Palette generator →