#515BD3#515BD3

#515BD3 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 53.1% C 0.182 H 274.7°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#515BD3
RGB	rgb(81, 91, 211)
HSL	hsl(235, 60%, 57%)
HSV	hsv(235, 62%, 83%)
CMYK	cmyk(61.6%, 56.9%, 0%, 17.3%)
CIE-LAB	lab(44.14, 32.57, -63.25)
CIE-LCH	lch(44.14, 71.14, 297.25°)
OKLab	oklab(53.13% 0.0151 -0.1817)
OKLCH	oklch(53.13% 0.182 274.7)
XYZ	xyz(18.8884, 13.9331, 63.3094)
Luminance	0.1394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BD3 #D3C951

analogous

#519CD3 #515BD3 #8851D3

triadic

#515BD3 #D3515B #5BD351

tetradic

#515BD3 #D3519C #D3C951 #51D388

square

#515BD3 #D3519C #D3C951 #51D388

split-complementary

#515BD3 #D38851 #9CD351

monochromatic

#222A87 #2F39B8 #515BD3 #8289DF #B3B7EC

Accessibility & contrast

On white

5.55

#515BD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#515BD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BD3

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BD3	#FFFFFF	#000000	##FFFFFF
##515BD3	1.00	5.55	3.79	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED7

Deuteranopia (green-blind)

#0063D1

Tritanopia (blue-blind)

#00788E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #515bd3;
/* rgb */ color: rgb(81, 91, 211);
/* oklch */ color: oklch(53.1% 0.182 274.7);

Tailwind

colors: {
  custom: {
    50: '#8e89e1',
    500: '#515bd3',
    950: '#000000',
  },
}

SCSS

$custom: #515bd3;
$custom-light: #8e89e1;
$custom-dark: #000000;

JSON

{
  "hex": "#515bd3",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 211
  },
  "hsl": {
    "h": 235.385,
    "s": 59.633,
    "l": 57.255
  },
  "oklch": {
    "l": 0.53129,
    "c": 0.18237,
    "h": 274.7
  },
  "luminance": 0.13935
}

Semantic roles & 50–950 ramp

primary

#515BD3

secondary

#DAD6A6

accent

#D745E3

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #515BD3

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

Preview Lab → · Contrast checker → · Palette generator →