#555FB9#555FB9

#555FB9 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.3% C 0.140 H 275.7°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#555FB9
RGB	rgb(85, 95, 185)
HSL	hsl(234, 42%, 53%)
HSV	hsv(234, 54%, 73%)
CMYK	cmyk(54.1%, 48.6%, 0%, 27.5%)
CIE-LAB	lab(43.68, 22.21, -48.94)
CIE-LCH	lch(43.68, 53.74, 294.41°)
OKLab	oklab(52.3% 0.0139 -0.1395)
OKLCH	oklch(52.3% 0.14 275.7)
XYZ	xyz(16.5927, 13.6174, 47.6436)
Luminance	0.1362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555FB9 #B9AF55

analogous

#5591B9 #555FB9 #7D55B9

triadic

#555FB9 #B9555F #5FB955

tetradic

#555FB9 #B95591 #B9AF55 #55B97D

square

#555FB9 #B95591 #B9AF55 #55B97D

split-complementary

#555FB9 #B97D55 #91B955

monochromatic

#2B3169 #3D4694 #555FB9 #8088CB #ACB1DD

Accessibility & contrast

On white

5.64

#555FB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#555FB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555FB9

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555FB9	#FFFFFF	#000000	##FFFFFF
##555FB9	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#346CBC

Deuteranopia (green-blind)

#2863B7

Tritanopia (blue-blind)

#257383

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #555fb9;
/* rgb */ color: rgb(85, 95, 185);
/* oklch */ color: oklch(52.3% 0.140 275.7);

Tailwind

colors: {
  custom: {
    50: '#8c8cce',
    500: '#555fb9',
    950: '#000000',
  },
}

SCSS

$custom: #555fb9;
$custom-light: #8c8cce;
$custom-dark: #000000;

JSON

{
  "hex": "#555fb9",
  "rgb": {
    "r": 85,
    "g": 95,
    "b": 185
  },
  "hsl": {
    "h": 234,
    "s": 41.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.52299,
    "c": 0.14023,
    "h": 275.7
  },
  "luminance": 0.13618
}

Semantic roles & 50–950 ramp

primary

#555FB9

secondary

#CBC69F

accent

#C556D1

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0C14

muted

#7E7D82

Preview Lab

Preview with #555FB9

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

Preview Lab → · Contrast checker → · Palette generator →