#555ECF#555ECF

#555ECF is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.6% C 0.172 H 275.5°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#555ECF
RGB	rgb(85, 94, 207)
HSL	hsl(236, 56%, 57%)
HSV	hsv(236, 59%, 81%)
CMYK	cmyk(58.9%, 54.6%, 0%, 18.8%)
CIE-LAB	lab(44.86, 30.08, -59.77)
CIE-LCH	lch(44.86, 66.91, 296.71°)
OKLab	oklab(53.65% 0.0166 -0.1714)
OKLCH	oklch(53.65% 0.172 275.5)
XYZ	xyz(19.0078, 14.4403, 60.8050)
Luminance	0.1444 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555ECF #CFC655

analogous

#559BCF #555ECF #8955CF

triadic

#555ECF #CF555E #5ECF55

tetradic

#555ECF #CF559B #CFC655 #55CF89

square

#555ECF #CF559B #CFC655 #55CF89

split-complementary

#555ECF #CF8955 #9BCF55

monochromatic

#252C84 #333CB4 #555ECF #858BDC #B4B8EA

Accessibility & contrast

On white

5.40

#555ECF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#555ECF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555ECF

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555ECF	#FFFFFF	#000000	##FFFFFF
##555ECF	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C6FD3

Deuteranopia (green-blind)

#0065CD

Tritanopia (blue-blind)

#00788D

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #555ecf;
/* rgb */ color: rgb(85, 94, 207);
/* oklch */ color: oklch(53.6% 0.172 275.5);

Tailwind

colors: {
  custom: {
    50: '#908bde',
    500: '#555ecf',
    950: '#000000',
  },
}

SCSS

$custom: #555ecf;
$custom-light: #908bde;
$custom-dark: #000000;

JSON

{
  "hex": "#555ecf",
  "rgb": {
    "r": 85,
    "g": 94,
    "b": 207
  },
  "hsl": {
    "h": 235.574,
    "s": 55.963,
    "l": 57.255
  },
  "oklch": {
    "l": 0.53645,
    "c": 0.1722,
    "h": 275.5
  },
  "luminance": 0.14442
}

Semantic roles & 50–950 ramp

primary

#555ECF

secondary

#D9D5A7

accent

#D449DF

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #555ECF

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

Preview Lab → · Contrast checker → · Palette generator →