#555BCC#555BCC

#555BCC is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.9% C 0.172 H 276.5°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#555BCC
RGB	rgb(85, 91, 204)
HSL	hsl(237, 54%, 57%)
HSV	hsv(237, 58%, 80%)
CMYK	cmyk(58.3%, 55.4%, 0%, 20%)
CIE-LAB	lab(43.90, 30.95, -59.59)
CIE-LCH	lch(43.90, 67.15, 297.44°)
OKLab	oklab(52.87% 0.0194 -0.1709)
OKLCH	oklch(52.87% 0.172 276.5)
XYZ	xyz(18.3830, 13.7718, 58.8045)
Luminance	0.1377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BCC #CCC655

analogous

#5597CC #555BCC #8B55CC

triadic

#555BCC #CC555B #5BCC55

tetradic

#555BCC #CC5597 #CCC655 #55CC8B

square

#555BCC #CC5597 #CCC655 #55CC8B

split-complementary

#555BCC #CC8B55 #97CC55

monochromatic

#262B80 #353BAF #555BCC #8488DA #B3B6E8

Accessibility & contrast

On white

5.59

#555BCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#555BCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BCC

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BCC	#FFFFFF	#000000	##FFFFFF
##555BCC	1.00	5.59	3.75	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#016DD0

Deuteranopia (green-blind)

#0063CA

Tritanopia (blue-blind)

#00758B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #555bcc;
/* rgb */ color: rgb(85, 91, 204);
/* oklch */ color: oklch(52.9% 0.172 276.5);

Tailwind

colors: {
  custom: {
    50: '#8f89dc',
    500: '#555bcc',
    950: '#000000',
  },
}

SCSS

$custom: #555bcc;
$custom-light: #8f89dc;
$custom-dark: #000000;

JSON

{
  "hex": "#555bcc",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 204
  },
  "hsl": {
    "h": 236.975,
    "s": 53.846,
    "l": 56.667
  },
  "oklch": {
    "l": 0.52867,
    "c": 0.17199,
    "h": 276.5
  },
  "luminance": 0.13773
}

Semantic roles & 50–950 ramp

primary

#555BCC

secondary

#D7D4A6

accent

#D64BDD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #555BCC

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

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