#505BB1#505BB1

#505BB1 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.6% C 0.135 H 275.0°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#505BB1
RGB	rgb(80, 91, 177)
HSL	hsl(233, 38%, 50%)
HSV	hsv(233, 55%, 69%)
CMYK	cmyk(54.8%, 48.6%, 0%, 30.6%)
CIE-LAB	lab(41.78, 21.03, -47.31)
CIE-LCH	lch(41.78, 51.78, 293.96°)
OKLab	oklab(50.62% 0.0118 -0.1349)
OKLCH	oklch(50.62% 0.135 275)
XYZ	xyz(14.9826, 12.3610, 43.1828)
Luminance	0.1236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#505BB1 #B1A650

analogous

#508BB1 #505BB1 #7550B1

triadic

#505BB1 #B1505B #5BB150

tetradic

#505BB1 #B1508B #B1A650 #50B175

square

#505BB1 #B1508B #B1A650 #50B175

split-complementary

#505BB1 #B17550 #8BB150

monochromatic

#292F5D #3C4587 #505BB1 #7A83C4 #A5AAD7

Accessibility & contrast

On white

6.05

#505BB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#505BB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #505BB1

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##505BB1	#FFFFFF	#000000	##FFFFFF
##505BB1	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3267B4

Deuteranopia (green-blind)

#265FAF

Tritanopia (blue-blind)

#206E7D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #505bb1;
/* rgb */ color: rgb(80, 91, 177);
/* oklch */ color: oklch(50.6% 0.135 275.0);

Tailwind

colors: {
  custom: {
    50: '#8889c9',
    500: '#505bb1',
    950: '#000000',
  },
}

SCSS

$custom: #505bb1;
$custom-light: #8889c9;
$custom-dark: #000000;

JSON

{
  "hex": "#505bb1",
  "rgb": {
    "r": 80,
    "g": 91,
    "b": 177
  },
  "hsl": {
    "h": 233.196,
    "s": 38.34,
    "l": 50.392
  },
  "oklch": {
    "l": 0.50617,
    "c": 0.13543,
    "h": 275
  },
  "luminance": 0.12362
}

Semantic roles & 50–950 ramp

primary

#505BB1

secondary

#C4BF99

accent

#C15ACE

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #505BB1

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

Preview Lab → · Contrast checker → · Palette generator →