#515DC9#515DC9

#515DC9 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.8% C 0.166 H 274.4°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#515DC9
RGB	rgb(81, 93, 201)
HSL	hsl(234, 53%, 55%)
HSV	hsv(234, 60%, 79%)
CMYK	cmyk(59.7%, 53.7%, 0%, 21.2%)
CIE-LAB	lab(43.94, 27.97, -57.82)
CIE-LCH	lch(43.94, 64.23, 295.82°)
OKLab	oklab(52.76% 0.0129 -0.1658)
OKLCH	oklch(52.76% 0.166 274.4)
XYZ	xyz(17.8469, 13.7937, 56.9690)
Luminance	0.1379 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515DC9 #C9BD51

analogous

#5199C9 #515DC9 #8151C9

triadic

#515DC9 #C9515D #5DC951

tetradic

#515DC9 #C95199 #C9BD51 #51C981

square

#515DC9 #C95199 #C9BD51 #51C981

split-complementary

#515DC9 #C98151 #99C951

monochromatic

#262E7A #3440A9 #515DC9 #8088D7 #AEB4E6

Accessibility & contrast

On white

5.59

#515DC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#515DC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515DC9

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515DC9	#FFFFFF	#000000	##FFFFFF
##515DC9	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#166DCD

Deuteranopia (green-blind)

#0063C7

Tritanopia (blue-blind)

#00768A

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #515dc9;
/* rgb */ color: rgb(81, 93, 201);
/* oklch */ color: oklch(52.8% 0.166 274.4);

Tailwind

colors: {
  custom: {
    50: '#8d8ada',
    500: '#515dc9',
    950: '#000000',
  },
}

SCSS

$custom: #515dc9;
$custom-light: #8d8ada;
$custom-dark: #000000;

JSON

{
  "hex": "#515dc9",
  "rgb": {
    "r": 81,
    "g": 93,
    "b": 201
  },
  "hsl": {
    "h": 234,
    "s": 52.632,
    "l": 55.294
  },
  "oklch": {
    "l": 0.52756,
    "c": 0.16627,
    "h": 274.4
  },
  "luminance": 0.13795
}

Semantic roles & 50–950 ramp

primary

#515DC9

secondary

#D4CFA2

accent

#CE4CDC

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #515DC9

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

Preview Lab → · Contrast checker → · Palette generator →