#515FB5#515FB5

#515FB5 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.8% C 0.136 H 273.8°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#515FB5
RGB	rgb(81, 95, 181)
HSL	hsl(232, 40%, 51%)
HSV	hsv(232, 55%, 71%)
CMYK	cmyk(55.2%, 47.5%, 0%, 29%)
CIE-LAB	lab(43.17, 20.03, -47.44)
CIE-LCH	lch(43.17, 51.50, 292.89°)
OKLab	oklab(51.76% 0.0089 -0.1352)
OKLCH	oklch(51.76% 0.136 273.8)
XYZ	xyz(15.8233, 13.2688, 45.4344)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515FB5 #B5A751

analogous

#5191B5 #515FB5 #7551B5

triadic

#515FB5 #B5515F #5FB551

tetradic

#515FB5 #B55191 #B5A751 #51B575

square

#515FB5 #B55191 #B5A751 #51B575

split-complementary

#515FB5 #B57551 #91B551

monochromatic

#2A3262 #3C478D #515FB5 #7C86C7 #A7AEDA

Accessibility & contrast

On white

5.75

#515FB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#515FB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515FB5

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515FB5	#FFFFFF	#000000	##FFFFFF
##515FB5	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#376AB8

Deuteranopia (green-blind)

#2A62B3

Tritanopia (blue-blind)

#1C7281

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #515fb5;
/* rgb */ color: rgb(81, 95, 181);
/* oklch */ color: oklch(51.8% 0.136 273.8);

Tailwind

colors: {
  custom: {
    50: '#898ccc',
    500: '#515fb5',
    950: '#000000',
  },
}

SCSS

$custom: #515fb5;
$custom-light: #898ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#515fb5",
  "rgb": {
    "r": 81,
    "g": 95,
    "b": 181
  },
  "hsl": {
    "h": 231.6,
    "s": 40.323,
    "l": 51.373
  },
  "oklch": {
    "l": 0.51761,
    "c": 0.13552,
    "h": 273.8
  },
  "luminance": 0.1327
}

Semantic roles & 50–950 ramp

primary

#515FB5

secondary

#C7C19B

accent

#BF58D0

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #515FB5

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

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