#515CB9#515CB9

#515CB9 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.4% C 0.145 H 275.0°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#515CB9
RGB	rgb(81, 92, 185)
HSL	hsl(234, 43%, 52%)
HSV	hsv(234, 56%, 73%)
CMYK	cmyk(56.2%, 50.3%, 0%, 27.5%)
CIE-LAB	lab(42.62, 23.26, -50.66)
CIE-LCH	lch(42.62, 55.74, 294.66°)
OKLab	oklab(51.43% 0.0127 -0.1447)
OKLCH	oklch(51.43% 0.145 275)
XYZ	xyz(15.9746, 12.9053, 47.5387)
Luminance	0.1291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515CB9 #B9AE51

analogous

#5190B9 #515CB9 #7A51B9

triadic

#515CB9 #B9515C #5CB951

tetradic

#515CB9 #B95190 #B9AE51 #51B97A

square

#515CB9 #B95190 #B9AE51 #51B97A

split-complementary

#515CB9 #B97A51 #90B951

monochromatic

#293066 #3B4492 #515CB9 #7D85CB #A8AEDC

Accessibility & contrast

On white

5.86

#515CB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#515CB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515CB9

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515CB9	#FFFFFF	#000000	##FFFFFF
##515CB9	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D69BC

Deuteranopia (green-blind)

#1C60B7

Tritanopia (blue-blind)

#177182

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515cb9;
/* rgb */ color: rgb(81, 92, 185);
/* oklch */ color: oklch(51.4% 0.145 275.0);

Tailwind

colors: {
  custom: {
    50: '#8a8acf',
    500: '#515cb9',
    950: '#000000',
  },
}

SCSS

$custom: #515cb9;
$custom-light: #8a8acf;
$custom-dark: #000000;

JSON

{
  "hex": "#515cb9",
  "rgb": {
    "r": 81,
    "g": 92,
    "b": 185
  },
  "hsl": {
    "h": 233.654,
    "s": 42.623,
    "l": 52.157
  },
  "oklch": {
    "l": 0.51429,
    "c": 0.14526,
    "h": 275
  },
  "luminance": 0.12906
}

Semantic roles & 50–950 ramp

primary

#515CB9

secondary

#CAC59C

accent

#C555D2

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #515CB9

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

Preview Lab → · Contrast checker → · Palette generator →