#515BB7#515BB7

#515BB7 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.1% C 0.144 H 275.4°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#515BB7
RGB	rgb(81, 91, 183)
HSL	hsl(234, 41%, 52%)
HSV	hsv(234, 56%, 72%)
CMYK	cmyk(55.7%, 50.3%, 0%, 28.2%)
CIE-LAB	lab(42.23, 23.23, -50.11)
CIE-LCH	lch(42.23, 55.24, 294.87°)
OKLab	oklab(51.09% 0.0136 -0.1431)
OKLCH	oklch(51.09% 0.144 275.4)
XYZ	xyz(15.6789, 12.6493, 46.4059)
Luminance	0.1265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BB7 #B7AD51

analogous

#518EB7 #515BB7 #7A51B7

triadic

#515BB7 #B7515B #5BB751

tetradic

#515BB7 #B7518E #B7AD51 #51B77A

square

#515BB7 #B7518E #B7AD51 #51B77A

split-complementary

#515BB7 #B77A51 #8EB751

monochromatic

#292F64 #3B448F #515BB7 #7C84C9 #A8ADDB

Accessibility & contrast

On white

5.95

#515BB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#515BB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BB7

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BB7	#FFFFFF	#000000	##FFFFFF
##515BB7	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C68BA

Deuteranopia (green-blind)

#1D60B5

Tritanopia (blue-blind)

#1A7080

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #515bb7;
/* rgb */ color: rgb(81, 91, 183);
/* oklch */ color: oklch(51.1% 0.144 275.4);

Tailwind

colors: {
  custom: {
    50: '#8a89cd',
    500: '#515bb7',
    950: '#000000',
  },
}

SCSS

$custom: #515bb7;
$custom-light: #8a89cd;
$custom-dark: #000000;

JSON

{
  "hex": "#515bb7",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 183
  },
  "hsl": {
    "h": 234.118,
    "s": 41.463,
    "l": 51.765
  },
  "oklch": {
    "l": 0.51093,
    "c": 0.14376,
    "h": 275.4
  },
  "luminance": 0.1265
}

Semantic roles & 50–950 ramp

primary

#515BB7

secondary

#C8C49C

accent

#C557D1

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515BB7

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

Preview Lab → · Contrast checker → · Palette generator →