#515FB0#515FB0

#515FB0 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.4% C 0.128 H 273.7°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#515FB0
RGB	rgb(81, 95, 176)
HSL	hsl(231, 38%, 50%)
HSV	hsv(231, 54%, 69%)
CMYK	cmyk(54%, 46%, 0%, 31%)
CIE-LAB	lab(42.86, 18.38, -44.99)
CIE-LCH	lch(42.86, 48.60, 292.22°)
OKLab	oklab(51.43% 0.0082 -0.128)
OKLCH	oklch(51.43% 0.128 273.7)
XYZ	xyz(15.3195, 13.0673, 42.7809)
Luminance	0.1307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515FB0 #B0A251

analogous

#518EB0 #515FB0 #7251B0

triadic

#515FB0 #B0515F #5FB051

tetradic

#515FB0 #B0518E #B0A251 #51B072

square

#515FB0 #B0518E #B0A251 #51B072

split-complementary

#515FB0 #B07251 #8EB051

monochromatic

#2A315D #3D4887 #515FB0 #7B86C3 #A5ACD6

Accessibility & contrast

On white

5.81

#515FB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#515FB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515FB0

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515FB0	#FFFFFF	#000000	##FFFFFF
##515FB0	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B69B3

Deuteranopia (green-blind)

#3061AE

Tritanopia (blue-blind)

#23717F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515fb0;
/* rgb */ color: rgb(81, 95, 176);
/* oklch */ color: oklch(51.4% 0.128 273.7);

Tailwind

colors: {
  custom: {
    50: '#898cc8',
    500: '#515fb0',
    950: '#000000',
  },
}

SCSS

$custom: #515fb0;
$custom-light: #898cc8;
$custom-dark: #000000;

JSON

{
  "hex": "#515fb0",
  "rgb": {
    "r": 81,
    "g": 95,
    "b": 176
  },
  "hsl": {
    "h": 231.158,
    "s": 37.549,
    "l": 50.392
  },
  "oklch": {
    "l": 0.51435,
    "c": 0.1283,
    "h": 273.7
  },
  "luminance": 0.13068
}

Semantic roles & 50–950 ramp

primary

#515FB0

secondary

#C4BD99

accent

#BD5ACE

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #515FB0

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

Preview Lab → · Contrast checker → · Palette generator →