#555CC9#555CC9

#555CC9 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.8% C 0.167 H 276.3°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#555CC9
RGB	rgb(85, 92, 201)
HSL	hsl(236, 52%, 56%)
HSV	hsv(236, 58%, 79%)
CMYK	cmyk(57.7%, 54.2%, 0%, 21.2%)
CIE-LAB	lab(43.95, 29.34, -57.79)
CIE-LCH	lch(43.95, 64.81, 296.92°)
OKLab	oklab(52.83% 0.0183 -0.1656)
OKLCH	oklch(52.83% 0.167 276.3)
XYZ	xyz(18.1127, 13.8013, 56.9565)
Luminance	0.1380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555CC9 #C9C255

analogous

#5596C9 #555CC9 #8855C9

triadic

#555CC9 #C9555C #5CC955

tetradic

#555CC9 #C95596 #C9C255 #55C988

square

#555CC9 #C95596 #C9C255 #55C988

split-complementary

#555CC9 #C98855 #96C955

monochromatic

#272D7C #363DAB #555CC9 #8389D8 #B2B5E7

Accessibility & contrast

On white

5.58

#555CC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#555CC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555CC9

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555CC9	#FFFFFF	#000000	##FFFFFF
##555CC9	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#146DCD

Deuteranopia (green-blind)

#0063C7

Tritanopia (blue-blind)

#057589

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #555cc9;
/* rgb */ color: rgb(85, 92, 201);
/* oklch */ color: oklch(52.8% 0.167 276.3);

Tailwind

colors: {
  custom: {
    50: '#8f8ada',
    500: '#555cc9',
    950: '#000000',
  },
}

SCSS

$custom: #555cc9;
$custom-light: #8f8ada;
$custom-dark: #000000;

JSON

{
  "hex": "#555cc9",
  "rgb": {
    "r": 85,
    "g": 92,
    "b": 201
  },
  "hsl": {
    "h": 236.379,
    "s": 51.786,
    "l": 56.078
  },
  "oklch": {
    "l": 0.52833,
    "c": 0.1666,
    "h": 276.3
  },
  "luminance": 0.13803
}

Semantic roles & 50–950 ramp

primary

#555CC9

secondary

#D5D2A5

accent

#D34DDB

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #555CC9

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

Preview Lab → · Contrast checker → · Palette generator →