#555EB2#555EB2

#555EB2 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.6% C 0.132 H 276.2°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#555EB2
RGB	rgb(85, 94, 178)
HSL	hsl(234, 38%, 52%)
HSV	hsv(234, 52%, 70%)
CMYK	cmyk(52.2%, 47.2%, 0%, 30.2%)
CIE-LAB	lab(42.99, 20.56, -45.95)
CIE-LCH	lch(42.99, 50.34, 294.10°)
OKLab	oklab(51.64% 0.0141 -0.1308)
OKLCH	oklch(51.64% 0.132 276.2)
XYZ	xyz(15.7824, 13.1501, 43.8174)
Luminance	0.1315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555EB2 #B2A955

analogous

#558DB2 #555EB2 #7B55B2

triadic

#555EB2 #B2555E #5EB255

tetradic

#555EB2 #B2558D #B2A955 #55B27B

square

#555EB2 #B2558D #B2A955 #55B27B

split-complementary

#555EB2 #B27B55 #8DB255

monochromatic

#2C3161 #3F468B #555EB2 #7F86C5 #A9AED8

Accessibility & contrast

On white

5.78

#555EB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#555EB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555EB2

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555EB2	#FFFFFF	#000000	##FFFFFF
##555EB2	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3969B5

Deuteranopia (green-blind)

#2F62B0

Tritanopia (blue-blind)

#2D707F

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #555eb2;
/* rgb */ color: rgb(85, 94, 178);
/* oklch */ color: oklch(51.6% 0.132 276.2);

Tailwind

colors: {
  custom: {
    50: '#8b8bc9',
    500: '#555eb2',
    950: '#000000',
  },
}

SCSS

$custom: #555eb2;
$custom-light: #8b8bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#555eb2",
  "rgb": {
    "r": 85,
    "g": 94,
    "b": 178
  },
  "hsl": {
    "h": 234.194,
    "s": 37.652,
    "l": 51.569
  },
  "oklch": {
    "l": 0.51639,
    "c": 0.13153,
    "h": 276.2
  },
  "luminance": 0.13151
}

Semantic roles & 50–950 ramp

primary

#555EB2

secondary

#C6C29D

accent

#C25ACE

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #555EB2

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

Preview Lab → · Contrast checker → · Palette generator →