#555BDF#555BDF

#555BDF is a mid, vivid blue. Relative luminance 0.147; OKLCH L 54.3% C 0.197 H 275.7°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#555BDF
RGB	rgb(85, 91, 223)
HSL	hsl(237, 68%, 60%)
HSV	hsv(237, 62%, 87%)
CMYK	cmyk(61.9%, 59.2%, 0%, 12.5%)
CIE-LAB	lab(45.28, 37.20, -68.23)
CIE-LCH	lch(45.28, 77.71, 298.60°)
OKLab	oklab(54.32% 0.0195 -0.1963)
OKLCH	oklch(54.32% 0.197 275.7)
XYZ	xyz(20.8023, 14.7395, 71.5465)
Luminance	0.1474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BDF #DFD955

analogous

#55A0DF #555BDF #9455DF

triadic

#555BDF #DF555B #5BDF55

tetradic

#555BDF #DF55A0 #DFD955 #55DF94

square

#555BDF #DF55A0 #DFD955 #55DF94

split-complementary

#555BDF #DF9455 #A0DF55

monochromatic

#1D239C #272ED0 #555BDF #898DE9 #BCBEF2

Accessibility & contrast

On white

5.32

#555BDF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#555BDF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BDF

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BDF	#FFFFFF	#000000	##FFFFFF
##555BDF	1.00	5.32	3.95	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071E3

Deuteranopia (green-blind)

#0065DC

Tritanopia (blue-blind)

#007B94

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #555bdf;
/* rgb */ color: rgb(85, 91, 223);
/* oklch */ color: oklch(54.3% 0.197 275.7);

Tailwind

colors: {
  custom: {
    50: '#9289ea',
    500: '#555bdf',
    950: '#000000',
  },
}

SCSS

$custom: #555bdf;
$custom-light: #9289ea;
$custom-dark: #000000;

JSON

{
  "hex": "#555bdf",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 223
  },
  "hsl": {
    "h": 237.391,
    "s": 68.317,
    "l": 60.392
  },
  "oklch": {
    "l": 0.54318,
    "c": 0.19727,
    "h": 275.7
  },
  "luminance": 0.14741
}

Semantic roles & 50–950 ramp

primary

#555BDF

secondary

#E2E0AE

accent

#C815D0

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #555BDF

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

Preview Lab → · Contrast checker → · Palette generator →