#555FBC#555FBC

#555FBC is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.5% C 0.144 H 275.6°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#555FBC
RGB	rgb(85, 95, 188)
HSL	hsl(234, 43%, 54%)
HSV	hsv(234, 55%, 74%)
CMYK	cmyk(54.8%, 49.5%, 0%, 26.3%)
CIE-LAB	lab(43.87, 23.19, -50.39)
CIE-LCH	lch(43.87, 55.47, 294.71°)
OKLab	oklab(52.5% 0.0142 -0.1438)
OKLCH	oklch(52.5% 0.144 275.6)
XYZ	xyz(16.9127, 13.7454, 49.3291)
Luminance	0.1375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555FBC #BCB255

analogous

#5592BC #555FBC #7E55BC

triadic

#555FBC #BC555F #5FBC55

tetradic

#555FBC #BC5592 #BCB255 #55BC7E

square

#555FBC #BC5592 #BCB255 #55BC7E

split-complementary

#555FBC #BC7E55 #92BC55

monochromatic

#2B316C #3C4598 #555FBC #8188CD #ADB2DF

Accessibility & contrast

On white

5.60

#555FBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#555FBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555FBC

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555FBC	#FFFFFF	#000000	##FFFFFF
##555FBC	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#316CBF

Deuteranopia (green-blind)

#2364BA

Tritanopia (blue-blind)

#217484

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #555fbc;
/* rgb */ color: rgb(85, 95, 188);
/* oklch */ color: oklch(52.5% 0.144 275.6);

Tailwind

colors: {
  custom: {
    50: '#8d8cd1',
    500: '#555fbc',
    950: '#000000',
  },
}

SCSS

$custom: #555fbc;
$custom-light: #8d8cd1;
$custom-dark: #000000;

JSON

{
  "hex": "#555fbc",
  "rgb": {
    "r": 85,
    "g": 95,
    "b": 188
  },
  "hsl": {
    "h": 234.175,
    "s": 43.46,
    "l": 53.529
  },
  "oklch": {
    "l": 0.525,
    "c": 0.14449,
    "h": 275.6
  },
  "luminance": 0.13747
}

Semantic roles & 50–950 ramp

primary

#555FBC

secondary

#CCC8A0

accent

#C755D3

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0C14

muted

#7E7D82

Preview Lab

Preview with #555FBC

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

Preview Lab → · Contrast checker → · Palette generator →