#515DB9#515DB9

#515DB9 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.6% C 0.144 H 274.6°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#515DB9
RGB	rgb(81, 93, 185)
HSL	hsl(233, 43%, 52%)
HSV	hsv(233, 56%, 73%)
CMYK	cmyk(56.2%, 49.7%, 0%, 27.5%)
CIE-LAB	lab(42.88, 22.63, -50.23)
CIE-LCH	lch(42.88, 55.09, 294.25°)
OKLab	oklab(51.63% 0.0116 -0.1434)
OKLCH	oklch(51.63% 0.144 274.6)
XYZ	xyz(16.0618, 13.0797, 47.5678)
Luminance	0.1308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515DB9 #B9AD51

analogous

#5191B9 #515DB9 #7951B9

triadic

#515DB9 #B9515D #5DB951

tetradic

#515DB9 #B95191 #B9AD51 #51B979

square

#515DB9 #B95191 #B9AD51 #51B979

split-complementary

#515DB9 #B97951 #91B951

monochromatic

#293066 #3B4592 #515DB9 #7D86CB #A8AEDC

Accessibility & contrast

On white

5.81

#515DB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#515DB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515DB9

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515DB9	#FFFFFF	#000000	##FFFFFF
##515DB9	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)

#2F6ABC

Deuteranopia (green-blind)

#1F61B7

Tritanopia (blue-blind)

#167282

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515db9;
/* rgb */ color: rgb(81, 93, 185);
/* oklch */ color: oklch(51.6% 0.144 274.6);

Tailwind

colors: {
  custom: {
    50: '#8a8acf',
    500: '#515db9',
    950: '#000000',
  },
}

SCSS

$custom: #515db9;
$custom-light: #8a8acf;
$custom-dark: #000000;

JSON

{
  "hex": "#515db9",
  "rgb": {
    "r": 81,
    "g": 93,
    "b": 185
  },
  "hsl": {
    "h": 233.077,
    "s": 42.623,
    "l": 52.157
  },
  "oklch": {
    "l": 0.51627,
    "c": 0.14392,
    "h": 274.6
  },
  "luminance": 0.13081
}

Semantic roles & 50–950 ramp

primary

#515DB9

secondary

#CAC49C

accent

#C455D2

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #515DB9

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

Preview Lab → · Contrast checker → · Palette generator →