#515BD0#515BD0

#515BD0 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.9% C 0.178 H 274.8°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#515BD0
RGB	rgb(81, 91, 208)
HSL	hsl(235, 57%, 57%)
HSV	hsv(235, 61%, 82%)
CMYK	cmyk(61.1%, 56.2%, 0%, 18.4%)
CIE-LAB	lab(43.92, 31.57, -61.87)
CIE-LCH	lch(43.92, 69.46, 297.03°)
OKLab	oklab(52.9% 0.015 -0.1777)
OKLCH	oklch(52.9% 0.178 274.8)
XYZ	xyz(18.5159, 13.7841, 61.3471)
Luminance	0.1379 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BD0 #D0C651

analogous

#519AD0 #515BD0 #8751D0

triadic

#515BD0 #D0515B #5BD051

tetradic

#515BD0 #D0519A #D0C651 #51D087

square

#515BD0 #D0519A #D0C651 #51D087

split-complementary

#515BD0 #D08751 #9AD051

monochromatic

#232B83 #303BB3 #515BD0 #8188DD #B1B6EA

Accessibility & contrast

On white

5.59

#515BD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#515BD0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BD0

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BD0	#FFFFFF	#000000	##FFFFFF
##515BD0	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD4

Deuteranopia (green-blind)

#0062CE

Tritanopia (blue-blind)

#00778D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #515bd0;
/* rgb */ color: rgb(81, 91, 208);
/* oklch */ color: oklch(52.9% 0.178 274.8);

Tailwind

colors: {
  custom: {
    50: '#8e89df',
    500: '#515bd0',
    950: '#000000',
  },
}

SCSS

$custom: #515bd0;
$custom-light: #8e89df;
$custom-dark: #000000;

JSON

{
  "hex": "#515bd0",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 208
  },
  "hsl": {
    "h": 235.276,
    "s": 57.466,
    "l": 56.667
  },
  "oklch": {
    "l": 0.52901,
    "c": 0.17834,
    "h": 274.8
  },
  "luminance": 0.13786
}

Semantic roles & 50–950 ramp

primary

#515BD0

secondary

#D8D4A4

accent

#D547E1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #515BD0

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

Preview Lab → · Contrast checker → · Palette generator →