#515BB6#515BB6

#515BB6 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.0% C 0.142 H 275.4°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#515BB6
RGB	rgb(81, 91, 182)
HSL	hsl(234, 41%, 52%)
HSV	hsv(234, 55%, 71%)
CMYK	cmyk(55.5%, 50%, 0%, 28.6%)
CIE-LAB	lab(42.17, 22.90, -49.63)
CIE-LCH	lch(42.17, 54.66, 294.76°)
OKLab	oklab(51.03% 0.0135 -0.1417)
OKLCH	oklch(51.03% 0.142 275.4)
XYZ	xyz(15.5752, 12.6078, 45.8597)
Luminance	0.1261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BB6 #B6AC51

analogous

#518EB6 #515BB6 #7A51B6

triadic

#515BB6 #B6515B #5BB651

tetradic

#515BB6 #B6518E #B6AC51 #51B67A

square

#515BB6 #B6518E #B6AC51 #51B67A

split-complementary

#515BB6 #B67A51 #8EB651

monochromatic

#2A2F63 #3C448E #515BB6 #7C84C8 #A7ACDA

Accessibility & contrast

On white

5.96

#515BB6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#515BB6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BB6

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BB6	#FFFFFF	#000000	##FFFFFF
##515BB6	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E68B9

Deuteranopia (green-blind)

#1F5FB4

Tritanopia (blue-blind)

#1C6F80

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #515bb6;
/* rgb */ color: rgb(81, 91, 182);
/* oklch */ color: oklch(51.0% 0.142 275.4);

Tailwind

colors: {
  custom: {
    50: '#8a89cc',
    500: '#515bb6',
    950: '#000000',
  },
}

SCSS

$custom: #515bb6;
$custom-light: #8a89cc;
$custom-dark: #000000;

JSON

{
  "hex": "#515bb6",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 182
  },
  "hsl": {
    "h": 234.059,
    "s": 40.891,
    "l": 51.569
  },
  "oklch": {
    "l": 0.51025,
    "c": 0.14234,
    "h": 275.4
  },
  "luminance": 0.12609
}

Semantic roles & 50–950 ramp

primary

#515BB6

secondary

#C8C39B

accent

#C557D1

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515BB6

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

Preview Lab → · Contrast checker → · Palette generator →