#555BCD#555BCD

#555BCD is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.9% C 0.173 H 276.4°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#555BCD
RGB	rgb(85, 91, 205)
HSL	hsl(237, 55%, 57%)
HSV	hsv(237, 59%, 80%)
CMYK	cmyk(58.5%, 55.6%, 0%, 19.6%)
CIE-LAB	lab(43.97, 31.28, -60.05)
CIE-LCH	lch(43.97, 67.71, 297.51°)
OKLab	oklab(52.94% 0.0195 -0.1722)
OKLCH	oklch(52.94% 0.173 276.4)
XYZ	xyz(18.5033, 13.8199, 59.4382)
Luminance	0.1382 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BCD #CDC755

analogous

#5597CD #555BCD #8B55CD

triadic

#555BCD #CD555B #5BCD55

tetradic

#555BCD #CD5597 #CDC755 #55CD8B

square

#555BCD #CD5597 #CDC755 #55CD8B

split-complementary

#555BCD #CD8B55 #97CD55

monochromatic

#262B82 #343AB1 #555BCD #8489DB #B4B6E9

Accessibility & contrast

On white

5.58

#555BCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#555BCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BCD

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BCD	#FFFFFF	#000000	##FFFFFF
##555BCD	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)

#006DD1

Deuteranopia (green-blind)

#0063CB

Tritanopia (blue-blind)

#00768B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #555bcd;
/* rgb */ color: rgb(85, 91, 205);
/* oklch */ color: oklch(52.9% 0.173 276.4);

Tailwind

colors: {
  custom: {
    50: '#8f89dd',
    500: '#555bcd',
    950: '#000000',
  },
}

SCSS

$custom: #555bcd;
$custom-light: #8f89dd;
$custom-dark: #000000;

JSON

{
  "hex": "#555bcd",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 205
  },
  "hsl": {
    "h": 237,
    "s": 54.545,
    "l": 56.863
  },
  "oklch": {
    "l": 0.52941,
    "c": 0.17335,
    "h": 276.4
  },
  "luminance": 0.13821
}

Semantic roles & 50–950 ramp

primary

#555BCD

secondary

#D7D5A6

accent

#D64ADE

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #555BCD

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

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