#515BBA#515BBA

#515BBA is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.3% C 0.148 H 275.4°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#515BBA
RGB	rgb(81, 91, 186)
HSL	hsl(234, 43%, 52%)
HSV	hsv(234, 56%, 73%)
CMYK	cmyk(56.5%, 51.1%, 0%, 27.1%)
CIE-LAB	lab(42.42, 24.22, -51.56)
CIE-LCH	lch(42.42, 56.96, 295.16°)
OKLab	oklab(51.3% 0.0139 -0.1474)
OKLCH	oklch(51.3% 0.148 275.4)
XYZ	xyz(15.9945, 12.7755, 48.0679)
Luminance	0.1278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BBA #BAB051

analogous

#518FBA #515BBA #7C51BA

triadic

#515BBA #BA515B #5BBA51

tetradic

#515BBA #BA518F #BAB051 #51BA7C

square

#515BBA #BA518F #BAB051 #51BA7C

split-complementary

#515BBA #BA7C51 #8FBA51

monochromatic

#292F68 #3A4393 #515BBA #7D84CB #A9AEDD

Accessibility & contrast

On white

5.91

#515BBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#515BBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BBA

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BBA	#FFFFFF	#000000	##FFFFFF
##515BBA	1.00	5.91	3.56	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2969BD

Deuteranopia (green-blind)

#1760B8

Tritanopia (blue-blind)

#157082

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #515bba;
/* rgb */ color: rgb(81, 91, 186);
/* oklch */ color: oklch(51.3% 0.148 275.4);

Tailwind

colors: {
  custom: {
    50: '#8a89cf',
    500: '#515bba',
    950: '#000000',
  },
}

SCSS

$custom: #515bba;
$custom-light: #8a89cf;
$custom-dark: #000000;

JSON

{
  "hex": "#515bba",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 186
  },
  "hsl": {
    "h": 234.286,
    "s": 43.21,
    "l": 52.353
  },
  "oklch": {
    "l": 0.51301,
    "c": 0.14801,
    "h": 275.4
  },
  "luminance": 0.12777
}

Semantic roles & 50–950 ramp

primary

#515BBA

secondary

#CAC69D

accent

#C755D3

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0D0B14

muted

#7D7C82

Preview Lab

Preview with #515BBA

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

Preview Lab → · Contrast checker → · Palette generator →