#555CB4#555CB4

#555CB4 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.4% C 0.137 H 277.0°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#555CB4
RGB	rgb(85, 92, 180)
HSL	hsl(236, 39%, 52%)
HSV	hsv(236, 53%, 71%)
CMYK	cmyk(52.8%, 48.9%, 0%, 29.4%)
CIE-LAB	lab(42.58, 22.47, -47.78)
CIE-LCH	lch(42.58, 52.80, 295.19°)
OKLab	oklab(51.37% 0.0167 -0.1361)
OKLCH	oklch(51.37% 0.137 277)
XYZ	xyz(15.8091, 12.8799, 44.8242)
Luminance	0.1288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555CB4 #B4AD55

analogous

#558CB4 #555CB4 #7E55B4

triadic

#555CB4 #B4555C #5CB455

tetradic

#555CB4 #B4558C #B4AD55 #55B47E

square

#555CB4 #B4558C #B4AD55 #55B47E

split-complementary

#555CB4 #B47E55 #8CB455

monochromatic

#2C3063 #3E448D #555CB4 #7F85C7 #AAADD9

Accessibility & contrast

On white

5.87

#555CB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#555CB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555CB4

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555CB4	#FFFFFF	#000000	##FFFFFF
##555CB4	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3368B7

Deuteranopia (green-blind)

#2861B2

Tritanopia (blue-blind)

#2B6F7F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555cb4;
/* rgb */ color: rgb(85, 92, 180);
/* oklch */ color: oklch(51.4% 0.137 277.0);

Tailwind

colors: {
  custom: {
    50: '#8c8acb',
    500: '#555cb4',
    950: '#000000',
  },
}

SCSS

$custom: #555cb4;
$custom-light: #8c8acb;
$custom-dark: #000000;

JSON

{
  "hex": "#555cb4",
  "rgb": {
    "r": 85,
    "g": 92,
    "b": 180
  },
  "hsl": {
    "h": 235.579,
    "s": 38.776,
    "l": 51.961
  },
  "oklch": {
    "l": 0.5137,
    "c": 0.13716,
    "h": 277
  },
  "luminance": 0.12881
}

Semantic roles & 50–950 ramp

primary

#555CB4

secondary

#C7C49E

accent

#C659CF

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0D0B13

muted

#7D7C82

Preview Lab

Preview with #555CB4

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

Preview Lab → · Contrast checker → · Palette generator →