#555B8A#555B8A

#555B8A is a mid, moderate blue. Relative luminance 0.112; OKLCH L 48.6% C 0.076 H 277.6°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#555B8A
RGB	rgb(85, 91, 138)
HSL	hsl(233, 24%, 44%)
HSV	hsv(233, 38%, 54%)
CMYK	cmyk(38.4%, 34.1%, 0%, 45.9%)
CIE-LAB	lab(40.00, 9.99, -26.86)
CIE-LCH	lch(40.00, 28.65, 290.40°)
OKLab	oklab(48.64% 0.01 -0.0751)
OKLCH	oklch(48.64% 0.076 277.6)
XYZ	xyz(12.0735, 11.2480, 25.5748)
Luminance	0.1125 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555B8A #8A8455

analogous

#55758A #555B8A #69558A

triadic

#555B8A #8A555B #5B8A55

tetradic

#555B8A #8A5575 #8A8455 #558A69

square

#555B8A #8A5575 #8A8455 #558A69

split-complementary

#555B8A #8A6955 #758A55

monochromatic

#26293E #3E4264 #555B8A #7379A9 #999EC0

Accessibility & contrast

On white

6.46

#555B8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#555B8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555B8A

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555B8A	#FFFFFF	#000000	##FFFFFF
##555B8A	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C608C

Deuteranopia (green-blind)

#485C89

Tritanopia (blue-blind)

#46646C

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #555b8a;
/* rgb */ color: rgb(85, 91, 138);
/* oklch */ color: oklch(48.6% 0.076 277.6);

Tailwind

colors: {
  custom: {
    50: '#8789ac',
    500: '#555b8a',
    950: '#000000',
  },
}

SCSS

$custom: #555b8a;
$custom-light: #8789ac;
$custom-dark: #000000;

JSON

{
  "hex": "#555b8a",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 138
  },
  "hsl": {
    "h": 233.208,
    "s": 23.767,
    "l": 43.725
  },
  "oklch": {
    "l": 0.48642,
    "c": 0.07573,
    "h": 277.6
  },
  "luminance": 0.11248
}

Semantic roles & 50–950 ramp

primary

#555B8A

secondary

#AEAA8D

accent

#B668C0

background

#F8F8FA

surface

#F0F0F4

border

#CBCBCE

text

#0B0B10

muted

#7C7C7F

Preview Lab

Preview with #555B8A

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

Preview Lab → · Contrast checker → · Palette generator →