#515BBD#515BBD

#515BBD is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.5% C 0.152 H 275.3°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#515BBD
RGB	rgb(81, 91, 189)
HSL	hsl(234, 45%, 53%)
HSV	hsv(234, 57%, 74%)
CMYK	cmyk(57.1%, 51.9%, 0%, 25.9%)
CIE-LAB	lab(42.62, 25.22, -52.99)
CIE-LCH	lch(42.62, 58.69, 295.45°)
OKLab	oklab(51.51% 0.0141 -0.1516)
OKLCH	oklch(51.51% 0.152 275.3)
XYZ	xyz(16.3168, 12.9045, 49.7652)
Luminance	0.1291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BBD #BDB351

analogous

#5191BD #515BBD #7D51BD

triadic

#515BBD #BD515B #5BBD51

tetradic

#515BBD #BD5191 #BDB351 #51BD7D

square

#515BBD #BD5191 #BDB351 #51BD7D

split-complementary

#515BBD #BD7D51 #91BD51

monochromatic

#292F6B #394297 #515BBD #7D85CE #AAAFDF

Accessibility & contrast

On white

5.86

#515BBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#515BBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BBD

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BBD	#FFFFFF	#000000	##FFFFFF
##515BBD	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2569C0

Deuteranopia (green-blind)

#0E60BB

Tritanopia (blue-blind)

#0E7183

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515bbd;
/* rgb */ color: rgb(81, 91, 189);
/* oklch */ color: oklch(51.5% 0.152 275.3);

Tailwind

colors: {
  custom: {
    50: '#8b89d1',
    500: '#515bbd',
    950: '#000000',
  },
}

SCSS

$custom: #515bbd;
$custom-light: #8b89d1;
$custom-dark: #000000;

JSON

{
  "hex": "#515bbd",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 189
  },
  "hsl": {
    "h": 234.444,
    "s": 45,
    "l": 52.941
  },
  "oklch": {
    "l": 0.51511,
    "c": 0.15224,
    "h": 275.3
  },
  "luminance": 0.12906
}

Semantic roles & 50–950 ramp

primary

#515BBD

secondary

#CCC89E

accent

#C953D5

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #515BBD

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

Preview Lab → · Contrast checker → · Palette generator →