#515FB3#515FB3

#515FB3 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.6% C 0.133 H 273.7°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#515FB3
RGB	rgb(81, 95, 179)
HSL	hsl(231, 39%, 51%)
HSV	hsv(231, 55%, 70%)
CMYK	cmyk(54.7%, 46.9%, 0%, 29.8%)
CIE-LAB	lab(43.04, 19.37, -46.47)
CIE-LCH	lch(43.04, 50.34, 292.63°)
OKLab	oklab(51.63% 0.0086 -0.1324)
OKLCH	oklch(51.63% 0.133 273.7)
XYZ	xyz(15.6196, 13.1873, 44.3614)
Luminance	0.1319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515FB3 #B3A551

analogous

#5190B3 #515FB3 #7451B3

triadic

#515FB3 #B3515F #5FB351

tetradic

#515FB3 #B35190 #B3A551 #51B374

square

#515FB3 #B35190 #B3A551 #51B374

split-complementary

#515FB3 #B37451 #90B351

monochromatic

#2A3260 #3C488A #515FB3 #7C86C6 #A6ADD8

Accessibility & contrast

On white

5.77

#515FB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#515FB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515FB3

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515FB3	#FFFFFF	#000000	##FFFFFF
##515FB3	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396AB6

Deuteranopia (green-blind)

#2D62B1

Tritanopia (blue-blind)

#1F7180

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #515fb3;
/* rgb */ color: rgb(81, 95, 179);
/* oklch */ color: oklch(51.6% 0.133 273.7);

Tailwind

colors: {
  custom: {
    50: '#898cca',
    500: '#515fb3',
    950: '#000000',
  },
}

SCSS

$custom: #515fb3;
$custom-light: #898cca;
$custom-dark: #000000;

JSON

{
  "hex": "#515fb3",
  "rgb": {
    "r": 81,
    "g": 95,
    "b": 179
  },
  "hsl": {
    "h": 231.429,
    "s": 39.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.5163,
    "c": 0.13264,
    "h": 273.7
  },
  "luminance": 0.13188
}

Semantic roles & 50–950 ramp

primary

#515FB3

secondary

#C6BF9A

accent

#BE59CF

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #515FB3

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

Preview Lab → · Contrast checker → · Palette generator →