#555BB8#555BB8

#555BB8 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.4% C 0.144 H 277.3°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#555BB8
RGB	rgb(85, 91, 184)
HSL	hsl(236, 41%, 53%)
HSV	hsv(236, 54%, 72%)
CMYK	cmyk(53.8%, 50.5%, 0%, 27.8%)
CIE-LAB	lab(42.57, 24.40, -50.14)
CIE-LCH	lch(42.57, 55.76, 295.95°)
OKLab	oklab(51.44% 0.0183 -0.1431)
OKLCH	oklch(51.44% 0.144 277.3)
XYZ	xyz(16.1364, 12.8731, 46.9726)
Luminance	0.1287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BB8 #B8B255

analogous

#558CB8 #555BB8 #8155B8

triadic

#555BB8 #B8555B #5BB855

tetradic

#555BB8 #B8558C #B8B255 #55B881

square

#555BB8 #B8558C #B8B255 #55B881

split-complementary

#555BB8 #B88155 #8CB855

monochromatic

#2B2F67 #3D4293 #555BB8 #8085CA #ABAEDC

Accessibility & contrast

On white

5.87

#555BB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#555BB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BB8

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BB8	#FFFFFF	#000000	##FFFFFF
##555BB8	1.00	5.87	3.57	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D69BB

Deuteranopia (green-blind)

#2061B6

Tritanopia (blue-blind)

#277081

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #555bb8;
/* rgb */ color: rgb(85, 91, 184);
/* oklch */ color: oklch(51.4% 0.144 277.3);

Tailwind

colors: {
  custom: {
    50: '#8c89ce',
    500: '#555bb8',
    950: '#000000',
  },
}

SCSS

$custom: #555bb8;
$custom-light: #8c89ce;
$custom-dark: #000000;

JSON

{
  "hex": "#555bb8",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 184
  },
  "hsl": {
    "h": 236.364,
    "s": 41.079,
    "l": 52.745
  },
  "oklch": {
    "l": 0.51443,
    "c": 0.14424,
    "h": 277.3
  },
  "luminance": 0.12874
}

Semantic roles & 50–950 ramp

primary

#555BB8

secondary

#CAC79F

accent

#CA57D1

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #555BB8

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

Preview Lab → · Contrast checker → · Palette generator →