#555BB2#555BB2

#555BB2 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.0% C 0.136 H 277.5°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#555BB2
RGB	rgb(85, 91, 178)
HSL	hsl(236, 38%, 52%)
HSV	hsv(236, 52%, 70%)
CMYK	cmyk(52.2%, 48.9%, 0%, 30.2%)
CIE-LAB	lab(42.20, 22.45, -47.22)
CIE-LCH	lch(42.20, 52.29, 295.43°)
OKLab	oklab(51.04% 0.0176 -0.1345)
OKLCH	oklch(51.04% 0.136 277.5)
XYZ	xyz(15.5208, 12.6269, 43.7302)
Luminance	0.1263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BB2 #B2AC55

analogous

#558AB2 #555BB2 #7E55B2

triadic

#555BB2 #B2555B #5BB255

tetradic

#555BB2 #B2558A #B2AC55 #55B27E

square

#555BB2 #B2558A #B2AC55 #55B27E

split-complementary

#555BB2 #B27E55 #8AB255

monochromatic

#2C2F61 #3F448B #555BB2 #7F84C5 #A9ACD8

Accessibility & contrast

On white

5.96

#555BB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#555BB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BB2

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BB2	#FFFFFF	#000000	##FFFFFF
##555BB2	1.00	5.96	3.53	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3367B5

Deuteranopia (green-blind)

#2960B0

Tritanopia (blue-blind)

#2D6E7E

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #555bb2;
/* rgb */ color: rgb(85, 91, 178);
/* oklch */ color: oklch(51.0% 0.136 277.5);

Tailwind

colors: {
  custom: {
    50: '#8b89c9',
    500: '#555bb2',
    950: '#000000',
  },
}

SCSS

$custom: #555bb2;
$custom-light: #8b89c9;
$custom-dark: #000000;

JSON

{
  "hex": "#555bb2",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 178
  },
  "hsl": {
    "h": 236.129,
    "s": 37.652,
    "l": 51.569
  },
  "oklch": {
    "l": 0.51038,
    "c": 0.13567,
    "h": 277.5
  },
  "luminance": 0.12628
}

Semantic roles & 50–950 ramp

primary

#555BB2

secondary

#C6C39D

accent

#C65ACE

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #555BB2

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

Preview Lab → · Contrast checker → · Palette generator →