#555ACC#555ACC

#555ACC is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.7% C 0.173 H 276.8°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#555ACC
RGB	rgb(85, 90, 204)
HSL	hsl(237, 54%, 57%)
HSV	hsv(237, 58%, 80%)
CMYK	cmyk(58.3%, 55.9%, 0%, 20%)
CIE-LAB	lab(43.66, 31.57, -59.99)
CIE-LCH	lch(43.66, 67.79, 297.75°)
OKLab	oklab(52.68% 0.0204 -0.1721)
OKLCH	oklch(52.68% 0.173 276.8)
XYZ	xyz(18.2981, 13.6019, 58.7762)
Luminance	0.1360 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555ACC #CCC755

analogous

#5596CC #555ACC #8C55CC

triadic

#555ACC #CC555A #5ACC55

tetradic

#555ACC #CC5596 #CCC755 #55CC8C

square

#555ACC #CC5596 #CCC755 #55CC8C

split-complementary

#555ACC #CC8C55 #96CC55

monochromatic

#262A80 #353AAF #555ACC #8488DA #B3B5E8

Accessibility & contrast

On white

5.64

#555ACC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#555ACC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555ACC

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555ACC	#FFFFFF	#000000	##FFFFFF
##555ACC	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD0

Deuteranopia (green-blind)

#0062CA

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #555acc;
/* rgb */ color: rgb(85, 90, 204);
/* oklch */ color: oklch(52.7% 0.173 276.8);

Tailwind

colors: {
  custom: {
    50: '#8f88dc',
    500: '#555acc',
    950: '#000000',
  },
}

SCSS

$custom: #555acc;
$custom-light: #8f88dc;
$custom-dark: #000000;

JSON

{
  "hex": "#555acc",
  "rgb": {
    "r": 85,
    "g": 90,
    "b": 204
  },
  "hsl": {
    "h": 237.479,
    "s": 53.846,
    "l": 56.667
  },
  "oklch": {
    "l": 0.52682,
    "c": 0.17329,
    "h": 276.8
  },
  "luminance": 0.13603
}

Semantic roles & 50–950 ramp

primary

#555ACC

secondary

#D7D5A6

accent

#D74BDD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #555ACC

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

Preview Lab → · Contrast checker → · Palette generator →