#515EB4#515EB4

#515EB4 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.5% C 0.135 H 274.2°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#515EB4
RGB	rgb(81, 94, 180)
HSL	hsl(232, 40%, 51%)
HSV	hsv(232, 55%, 71%)
CMYK	cmyk(55%, 47.8%, 0%, 29.4%)
CIE-LAB	lab(42.84, 20.33, -47.38)
CIE-LCH	lch(42.84, 51.56, 293.23°)
OKLab	oklab(51.49% 0.0099 -0.1351)
OKLCH	oklch(51.49% 0.135 274.2)
XYZ	xyz(15.6316, 13.0489, 44.8662)
Luminance	0.1305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515EB4 #B4A751

analogous

#518FB4 #515EB4 #7551B4

triadic

#515EB4 #B4515E #5EB451

tetradic

#515EB4 #B4518F #B4A751 #51B475

square

#515EB4 #B4518F #B4A751 #51B475

split-complementary

#515EB4 #B47551 #8FB451

monochromatic

#2A3161 #3C478C #515EB4 #7C86C6 #A7ADD9

Accessibility & contrast

On white

5.82

#515EB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#515EB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515EB4

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515EB4	#FFFFFF	#000000	##FFFFFF
##515EB4	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366AB7

Deuteranopia (green-blind)

#2961B2

Tritanopia (blue-blind)

#1E7180

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515eb4;
/* rgb */ color: rgb(81, 94, 180);
/* oklch */ color: oklch(51.5% 0.135 274.2);

Tailwind

colors: {
  custom: {
    50: '#898bcb',
    500: '#515eb4',
    950: '#000000',
  },
}

SCSS

$custom: #515eb4;
$custom-light: #898bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#515eb4",
  "rgb": {
    "r": 81,
    "g": 94,
    "b": 180
  },
  "hsl": {
    "h": 232.121,
    "s": 39.759,
    "l": 51.176
  },
  "oklch": {
    "l": 0.51492,
    "c": 0.13543,
    "h": 274.2
  },
  "luminance": 0.1305
}

Semantic roles & 50–950 ramp

primary

#515EB4

secondary

#C6C19B

accent

#C058D0

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #515EB4

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

Preview Lab → · Contrast checker → · Palette generator →