#555DBB#555DBB

#555DBB is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.0% C 0.146 H 276.4°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#555DBB
RGB	rgb(85, 93, 187)
HSL	hsl(235, 43%, 53%)
HSV	hsv(235, 55%, 73%)
CMYK	cmyk(54.5%, 50.3%, 0%, 26.7%)
CIE-LAB	lab(43.28, 24.12, -50.75)
CIE-LCH	lch(43.28, 56.19, 295.42°)
OKLab	oklab(52.04% 0.0163 -0.1449)
OKLCH	oklch(52.04% 0.146 276.4)
XYZ	xyz(16.6274, 13.3467, 48.7041)
Luminance	0.1335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555DBB #BBB355

analogous

#5590BB #555DBB #8055BB

triadic

#555DBB #BB555D #5DBB55

tetradic

#555DBB #BB5590 #BBB355 #55BB80

square

#555DBB #BB5590 #BBB355 #55BB80

split-complementary

#555DBB #BB8055 #90BB55

monochromatic

#2B306B #3C4397 #555DBB #8187CC #ACB0DE

Accessibility & contrast

On white

5.72

#555DBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#555DBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555DBB

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555DBB	#FFFFFF	#000000	##FFFFFF
##555DBB	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E6BBE

Deuteranopia (green-blind)

#2062B9

Tritanopia (blue-blind)

#237283

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #555dbb;
/* rgb */ color: rgb(85, 93, 187);
/* oklch */ color: oklch(52.0% 0.146 276.4);

Tailwind

colors: {
  custom: {
    50: '#8d8ad0',
    500: '#555dbb',
    950: '#000000',
  },
}

SCSS

$custom: #555dbb;
$custom-light: #8d8ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#555dbb",
  "rgb": {
    "r": 85,
    "g": 93,
    "b": 187
  },
  "hsl": {
    "h": 235.294,
    "s": 42.857,
    "l": 53.333
  },
  "oklch": {
    "l": 0.52039,
    "c": 0.14577,
    "h": 276.4
  },
  "luminance": 0.13348
}

Semantic roles & 50–950 ramp

primary

#555DBB

secondary

#CCC8A0

accent

#C955D3

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #555DBB

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

Preview Lab → · Contrast checker → · Palette generator →