#515DCB#515DCB

#515DCB is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.9% C 0.169 H 274.4°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#515DCB
RGB	rgb(81, 93, 203)
HSL	hsl(234, 54%, 56%)
HSV	hsv(234, 60%, 80%)
CMYK	cmyk(60.1%, 54.2%, 0%, 20.4%)
CIE-LAB	lab(44.07, 28.64, -58.75)
CIE-LCH	lch(44.07, 65.36, 295.99°)
OKLab	oklab(52.9% 0.013 -0.1685)
OKLCH	oklch(52.9% 0.169 274.4)
XYZ	xyz(18.0837, 13.8884, 58.2161)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515DCB #CBBF51

analogous

#519ACB #515DCB #8251CB

triadic

#515DCB #CB515D #5DCB51

tetradic

#515DCB #CB519A #CBBF51 #51CB82

square

#515DCB #CB519A #CBBF51 #51CB82

split-complementary

#515DCB #CB8251 #9ACB51

monochromatic

#252E7C #333FAC #515DCB #8089D9 #AFB5E7

Accessibility & contrast

On white

5.56

#515DCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#515DCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515DCB

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515DCB	#FFFFFF	#000000	##FFFFFF
##515DCB	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#116ECF

Deuteranopia (green-blind)

#0063C9

Tritanopia (blue-blind)

#00778B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #515dcb;
/* rgb */ color: rgb(81, 93, 203);
/* oklch */ color: oklch(52.9% 0.169 274.4);

Tailwind

colors: {
  custom: {
    50: '#8d8adc',
    500: '#515dcb',
    950: '#000000',
  },
}

SCSS

$custom: #515dcb;
$custom-light: #8d8adc;
$custom-dark: #000000;

JSON

{
  "hex": "#515dcb",
  "rgb": {
    "r": 81,
    "g": 93,
    "b": 203
  },
  "hsl": {
    "h": 234.098,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.52902,
    "c": 0.16901,
    "h": 274.4
  },
  "luminance": 0.1389
}

Semantic roles & 50–950 ramp

primary

#515DCB

secondary

#D5D0A3

accent

#CF4ADD

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #515DCB

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

Preview Lab → · Contrast checker → · Palette generator →