#505BBC#505BBC

#505BBC is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.4% C 0.151 H 274.9°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#505BBC
RGB	rgb(80, 91, 188)
HSL	hsl(234, 45%, 53%)
HSV	hsv(234, 57%, 74%)
CMYK	cmyk(57.4%, 51.6%, 0%, 26.3%)
CIE-LAB	lab(42.49, 24.69, -52.63)
CIE-LCH	lch(42.49, 58.13, 295.13°)
OKLab	oklab(51.37% 0.0129 -0.1505)
OKLCH	oklch(51.37% 0.151 274.9)
XYZ	xyz(16.1235, 12.8173, 49.1915)
Luminance	0.1282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#505BBC #BCB150

analogous

#5091BC #505BBC #7B50BC

triadic

#505BBC #BC505B #5BBC50

tetradic

#505BBC #BC5091 #BCB150 #50BC7B

square

#505BBC #BC5091 #BCB150 #50BC7B

split-complementary

#505BBC #BC7B50 #91BC50

monochromatic

#282F69 #394396 #505BBC #7C84CD #A9AEDE

Accessibility & contrast

On white

5.89

#505BBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#505BBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #505BBC

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##505BBC	#FFFFFF	#000000	##FFFFFF
##505BBC	1.00	5.89	3.56	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2669BF

Deuteranopia (green-blind)

#0F60BA

Tritanopia (blue-blind)

#097183

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #505bbc;
/* rgb */ color: rgb(80, 91, 188);
/* oklch */ color: oklch(51.4% 0.151 274.9);

Tailwind

colors: {
  custom: {
    50: '#8a89d1',
    500: '#505bbc',
    950: '#000000',
  },
}

SCSS

$custom: #505bbc;
$custom-light: #8a89d1;
$custom-dark: #000000;

JSON

{
  "hex": "#505bbc",
  "rgb": {
    "r": 80,
    "g": 91,
    "b": 188
  },
  "hsl": {
    "h": 233.889,
    "s": 44.628,
    "l": 52.549
  },
  "oklch": {
    "l": 0.51373,
    "c": 0.15108,
    "h": 274.9
  },
  "luminance": 0.12818
}

Semantic roles & 50–950 ramp

primary

#505BBC

secondary

#CBC79C

accent

#C753D4

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0D0B14

muted

#7D7C82

Preview Lab

Preview with #505BBC

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

Preview Lab → · Contrast checker → · Palette generator →