#515DB4#515DB4

#515DB4 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.3% C 0.137 H 274.6°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#515DB4
RGB	rgb(81, 93, 180)
HSL	hsl(233, 40%, 51%)
HSV	hsv(233, 55%, 71%)
CMYK	cmyk(55%, 48.3%, 0%, 29.4%)
CIE-LAB	lab(42.57, 20.97, -47.81)
CIE-LCH	lch(42.57, 52.21, 293.68°)
OKLab	oklab(51.29% 0.011 -0.1363)
OKLCH	oklch(51.29% 0.137 274.6)
XYZ	xyz(15.5433, 12.8723, 44.8367)
Luminance	0.1287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515DB4 #B4A851

analogous

#518EB4 #515DB4 #7651B4

triadic

#515DB4 #B4515D #5DB451

tetradic

#515DB4 #B4518E #B4A851 #51B476

square

#515DB4 #B4518E #B4A851 #51B476

split-complementary

#515DB4 #B47651 #8EB451

monochromatic

#2A3061 #3C468C #515DB4 #7C85C6 #A7ADD9

Accessibility & contrast

On white

5.87

#515DB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#515DB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515DB4

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515DB4	#FFFFFF	#000000	##FFFFFF
##515DB4	1.00	5.87	3.57	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3469B7

Deuteranopia (green-blind)

#2761B2

Tritanopia (blue-blind)

#1E7080

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #515db4;
/* rgb */ color: rgb(81, 93, 180);
/* oklch */ color: oklch(51.3% 0.137 274.6);

Tailwind

colors: {
  custom: {
    50: '#898acb',
    500: '#515db4',
    950: '#000000',
  },
}

SCSS

$custom: #515db4;
$custom-light: #898acb;
$custom-dark: #000000;

JSON

{
  "hex": "#515db4",
  "rgb": {
    "r": 81,
    "g": 93,
    "b": 180
  },
  "hsl": {
    "h": 232.727,
    "s": 39.759,
    "l": 51.176
  },
  "oklch": {
    "l": 0.5129,
    "c": 0.13678,
    "h": 274.6
  },
  "luminance": 0.12873
}

Semantic roles & 50–950 ramp

primary

#515DB4

secondary

#C6C19B

accent

#C158D0

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515DB4

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

Preview Lab → · Contrast checker → · Palette generator →