#515DD1#515DD1

#515DD1 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.3% C 0.177 H 274.3°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#515DD1
RGB	rgb(81, 93, 209)
HSL	hsl(234, 58%, 57%)
HSV	hsv(234, 61%, 82%)
CMYK	cmyk(61.2%, 55.5%, 0%, 18%)
CIE-LAB	lab(44.49, 30.66, -61.53)
CIE-LCH	lch(44.49, 68.74, 296.49°)
OKLab	oklab(53.35% 0.0132 -0.1767)
OKLCH	oklch(53.35% 0.177 274.3)
XYZ	xyz(18.8125, 14.1800, 62.0549)
Luminance	0.1418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515DD1 #D1C551

analogous

#519DD1 #515DD1 #8551D1

triadic

#515DD1 #D1515D #5DD151

tetradic

#515DD1 #D1519D #D1C551 #51D185

square

#515DD1 #D1519D #D1C551 #51D185

split-complementary

#515DD1 #D18551 #9DD151

monochromatic

#232C85 #303CB5 #515DD1 #818ADE #B2B7EB

Accessibility & contrast

On white

5.47

#515DD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#515DD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515DD1

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515DD1	#FFFFFF	#000000	##FFFFFF
##515DD1	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD5

Deuteranopia (green-blind)

#0064CF

Tritanopia (blue-blind)

#00798E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #515dd1;
/* rgb */ color: rgb(81, 93, 209);
/* oklch */ color: oklch(53.3% 0.177 274.3);

Tailwind

colors: {
  custom: {
    50: '#8e8ae0',
    500: '#515dd1',
    950: '#000000',
  },
}

SCSS

$custom: #515dd1;
$custom-light: #8e8ae0;
$custom-dark: #000000;

JSON

{
  "hex": "#515dd1",
  "rgb": {
    "r": 81,
    "g": 93,
    "b": 209
  },
  "hsl": {
    "h": 234.375,
    "s": 58.182,
    "l": 56.863
  },
  "oklch": {
    "l": 0.53347,
    "c": 0.17716,
    "h": 274.3
  },
  "luminance": 0.14181
}

Semantic roles & 50–950 ramp

primary

#515DD1

secondary

#D9D4A5

accent

#D346E1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #515DD1

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

Preview Lab → · Contrast checker → · Palette generator →