#515DB3#515DB3

#515DB3 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.2% C 0.135 H 274.6°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#515DB3
RGB	rgb(81, 93, 179)
HSL	hsl(233, 39%, 51%)
HSV	hsv(233, 55%, 70%)
CMYK	cmyk(54.7%, 48%, 0%, 29.8%)
CIE-LAB	lab(42.51, 20.64, -47.32)
CIE-LCH	lch(42.51, 51.63, 293.56°)
OKLab	oklab(51.22% 0.0109 -0.1349)
OKLCH	oklch(51.22% 0.135 274.6)
XYZ	xyz(15.4418, 12.8317, 44.3021)
Luminance	0.1283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515DB3 #B3A751

analogous

#518EB3 #515DB3 #7651B3

triadic

#515DB3 #B3515D #5DB351

tetradic

#515DB3 #B3518E #B3A751 #51B376

square

#515DB3 #B3518E #B3A751 #51B376

split-complementary

#515DB3 #B37651 #8EB351

monochromatic

#2A3060 #3C468A #515DB3 #7C85C6 #A6ACD8

Accessibility & contrast

On white

5.89

#515DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#515DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515DB3

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515DB3	#FFFFFF	#000000	##FFFFFF
##515DB3	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3569B6

Deuteranopia (green-blind)

#2860B1

Tritanopia (blue-blind)

#20707F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #515db3;
/* rgb */ color: rgb(81, 93, 179);
/* oklch */ color: oklch(51.2% 0.135 274.6);

Tailwind

colors: {
  custom: {
    50: '#898aca',
    500: '#515db3',
    950: '#000000',
  },
}

SCSS

$custom: #515db3;
$custom-light: #898aca;
$custom-dark: #000000;

JSON

{
  "hex": "#515db3",
  "rgb": {
    "r": 81,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 232.653,
    "s": 39.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.51223,
    "c": 0.13534,
    "h": 274.6
  },
  "luminance": 0.12833
}

Semantic roles & 50–950 ramp

primary

#515DB3

secondary

#C6C09A

accent

#C159CF

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515DB3

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

Preview Lab → · Contrast checker → · Palette generator →