#515BDB#515BDB

#515BDB is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.7% C 0.193 H 274.5°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#515BDB
RGB	rgb(81, 91, 219)
HSL	hsl(236, 66%, 59%)
HSV	hsv(236, 63%, 86%)
CMYK	cmyk(63%, 58.4%, 0%, 14.1%)
CIE-LAB	lab(44.72, 35.24, -66.86)
CIE-LCH	lch(44.72, 75.58, 297.79°)
OKLab	oklab(53.75% 0.0151 -0.1924)
OKLCH	oklch(53.75% 0.193 274.5)
XYZ	xyz(19.9164, 14.3443, 68.7233)
Luminance	0.1435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BDB #DBD151

analogous

#51A0DB #515BDB #8C51DB

triadic

#515BDB #DB515B #5BDB51

tetradic

#515BDB #DB51A0 #DBD151 #51DB8C

square

#515BDB #DB51A0 #DBD151 #51DB8C

split-complementary

#515BDB #DB8C51 #A0DB51

monochromatic

#1E2793 #2934C6 #515BDB #848BE5 #B6BBF0

Accessibility & contrast

On white

5.43

#515BDB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#515BDB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BDB

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BDB	#FFFFFF	#000000	##FFFFFF
##515BDB	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070DF

Deuteranopia (green-blind)

#0064D8

Tritanopia (blue-blind)

#007A92

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #515bdb;
/* rgb */ color: rgb(81, 91, 219);
/* oklch */ color: oklch(53.7% 0.193 274.5);

Tailwind

colors: {
  custom: {
    50: '#9089e7',
    500: '#515bdb',
    950: '#000000',
  },
}

SCSS

$custom: #515bdb;
$custom-light: #9089e7;
$custom-dark: #000000;

JSON

{
  "hex": "#515bdb",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 219
  },
  "hsl": {
    "h": 235.652,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.53749,
    "c": 0.19298,
    "h": 274.5
  },
  "luminance": 0.14346
}

Semantic roles & 50–950 ramp

primary

#515BDB

secondary

#DFDBA9

accent

#DC3FE9

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #515BDB

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

Preview Lab → · Contrast checker → · Palette generator →