#555CCB#555CCB

#555CCB is a mid, vivid blue. Relative luminance 0.139; OKLCH L 53.0% C 0.169 H 276.2°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#555CCB
RGB	rgb(85, 92, 203)
HSL	hsl(236, 53%, 56%)
HSV	hsv(236, 58%, 80%)
CMYK	cmyk(58.1%, 54.7%, 0%, 20.4%)
CIE-LAB	lab(44.08, 30.00, -58.72)
CIE-LCH	lch(44.08, 65.94, 297.06°)
OKLab	oklab(52.98% 0.0184 -0.1683)
OKLCH	oklch(52.98% 0.169 276.2)
XYZ	xyz(18.3495, 13.8960, 58.2036)
Luminance	0.1390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555CCB #CBC455

analogous

#5597CB #555CCB #8955CB

triadic

#555CCB #CB555C #5CCB55

tetradic

#555CCB #CB5597 #CBC455 #55CB89

square

#555CCB #CB5597 #CBC455 #55CB89

split-complementary

#555CCB #CB8955 #97CB55

monochromatic

#272C7F #353CAE #555CCB #8489D9 #B3B6E8

Accessibility & contrast

On white

5.56

#555CCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#555CCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555CCB

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555CCB	#FFFFFF	#000000	##FFFFFF
##555CCB	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D6DCF

Deuteranopia (green-blind)

#0063C9

Tritanopia (blue-blind)

#00768A

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #555ccb;
/* rgb */ color: rgb(85, 92, 203);
/* oklch */ color: oklch(53.0% 0.169 276.2);

Tailwind

colors: {
  custom: {
    50: '#8f8adc',
    500: '#555ccb',
    950: '#000000',
  },
}

SCSS

$custom: #555ccb;
$custom-light: #8f8adc;
$custom-dark: #000000;

JSON

{
  "hex": "#555ccb",
  "rgb": {
    "r": 85,
    "g": 92,
    "b": 203
  },
  "hsl": {
    "h": 236.441,
    "s": 53.153,
    "l": 56.471
  },
  "oklch": {
    "l": 0.52979,
    "c": 0.16933,
    "h": 276.2
  },
  "luminance": 0.13897
}

Semantic roles & 50–950 ramp

primary

#555CCB

secondary

#D6D3A6

accent

#D44BDD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #555CCB

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

Preview Lab → · Contrast checker → · Palette generator →