#515BC1#515BC1

#515BC1 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.8% C 0.158 H 275.2°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#515BC1
RGB	rgb(81, 91, 193)
HSL	hsl(235, 47%, 54%)
HSV	hsv(235, 58%, 76%)
CMYK	cmyk(58%, 52.8%, 0%, 24.3%)
CIE-LAB	lab(42.88, 26.55, -54.89)
CIE-LCH	lch(42.88, 60.97, 295.81°)
OKLab	oklab(51.8% 0.0144 -0.1572)
OKLCH	oklch(51.8% 0.158 275.2)
XYZ	xyz(16.7569, 13.0805, 52.0835)
Luminance	0.1308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BC1 #C1B751

analogous

#5193C1 #515BC1 #7F51C1

triadic

#515BC1 #C1515B #5BC151

tetradic

#515BC1 #C15193 #C1B751 #51C17F

square

#515BC1 #C15193 #C1B751 #51C17F

split-complementary

#515BC1 #C17F51 #93C151

monochromatic

#282E70 #38419D #515BC1 #7E86D1 #ABB0E1

Accessibility & contrast

On white

5.81

#515BC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#515BC1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BC1

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BC1	#FFFFFF	#000000	##FFFFFF
##515BC1	1.00	5.81	3.62	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F6AC5

Deuteranopia (green-blind)

#0061BF

Tritanopia (blue-blind)

#007285

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515bc1;
/* rgb */ color: rgb(81, 91, 193);
/* oklch */ color: oklch(51.8% 0.158 275.2);

Tailwind

colors: {
  custom: {
    50: '#8b89d4',
    500: '#515bc1',
    950: '#000000',
  },
}

SCSS

$custom: #515bc1;
$custom-light: #8b89d4;
$custom-dark: #000000;

JSON

{
  "hex": "#515bc1",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 193
  },
  "hsl": {
    "h": 234.643,
    "s": 47.458,
    "l": 53.725
  },
  "oklch": {
    "l": 0.51795,
    "c": 0.15783,
    "h": 275.2
  },
  "luminance": 0.13082
}

Semantic roles & 50–950 ramp

primary

#515BC1

secondary

#CFCB9F

accent

#CB51D7

background

#F9F8FD

surface

#F1F0FA

border

#CBCBD3

text

#0D0B14

muted

#7E7C83

Preview Lab

Preview with #515BC1

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

Preview Lab → · Contrast checker → · Palette generator →