#515DB8#515DB8

#515DB8 is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.6% C 0.142 H 274.6°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#515DB8
RGB	rgb(81, 93, 184)
HSL	hsl(233, 42%, 52%)
HSV	hsv(233, 56%, 72%)
CMYK	cmyk(56%, 49.5%, 0%, 27.8%)
CIE-LAB	lab(42.82, 22.29, -49.75)
CIE-LCH	lch(42.82, 54.52, 294.14°)
OKLab	oklab(51.56% 0.0115 -0.142)
OKLCH	oklch(51.56% 0.142 274.6)
XYZ	xyz(15.9566, 13.0376, 47.0138)
Luminance	0.1304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515DB8 #B8AC51

analogous

#5191B8 #515DB8 #7951B8

triadic

#515DB8 #B8515D #5DB851

tetradic

#515DB8 #B85191 #B8AC51 #51B879

square

#515DB8 #B85191 #B8AC51 #51B879

split-complementary

#515DB8 #B87951 #91B851

monochromatic

#293065 #3B4591 #515DB8 #7C85CA #A8AEDB

Accessibility & contrast

On white

5.82

#515DB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#515DB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515DB8

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515DB8	#FFFFFF	#000000	##FFFFFF
##515DB8	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306ABB

Deuteranopia (green-blind)

#2161B6

Tritanopia (blue-blind)

#187182

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515db8;
/* rgb */ color: rgb(81, 93, 184);
/* oklch */ color: oklch(51.6% 0.142 274.6);

Tailwind

colors: {
  custom: {
    50: '#8a8ace',
    500: '#515db8',
    950: '#000000',
  },
}

SCSS

$custom: #515db8;
$custom-light: #8a8ace;
$custom-dark: #000000;

JSON

{
  "hex": "#515db8",
  "rgb": {
    "r": 81,
    "g": 93,
    "b": 184
  },
  "hsl": {
    "h": 233.01,
    "s": 42.041,
    "l": 51.961
  },
  "oklch": {
    "l": 0.51559,
    "c": 0.14249,
    "h": 274.6
  },
  "luminance": 0.13039
}

Semantic roles & 50–950 ramp

primary

#515DB8

secondary

#C9C49C

accent

#C356D2

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #515DB8

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

Preview Lab → · Contrast checker → · Palette generator →