#515BB0#515BB0

#515BB0 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.6% C 0.134 H 275.5°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#515BB0
RGB	rgb(81, 91, 176)
HSL	hsl(234, 38%, 50%)
HSV	hsv(234, 54%, 69%)
CMYK	cmyk(54%, 48.3%, 0%, 31%)
CIE-LAB	lab(41.79, 20.91, -46.71)
CIE-LCH	lch(41.79, 51.18, 294.12°)
OKLab	oklab(50.62% 0.0128 -0.1331)
OKLCH	oklch(50.62% 0.134 275.5)
XYZ	xyz(14.9684, 12.3651, 42.6638)
Luminance	0.1237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BB0 #B0A651

analogous

#518AB0 #515BB0 #7651B0

triadic

#515BB0 #B0515B #5BB051

tetradic

#515BB0 #B0518A #B0A651 #51B076

square

#515BB0 #B0518A #B0A651 #51B076

split-complementary

#515BB0 #B07651 #8AB051

monochromatic

#2A2F5D #3D4587 #515BB0 #7B83C3 #A5AAD6

Accessibility & contrast

On white

6.05

#515BB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#515BB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BB0

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BB0	#FFFFFF	#000000	##FFFFFF
##515BB0	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3367B3

Deuteranopia (green-blind)

#285FAE

Tritanopia (blue-blind)

#246E7D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #515bb0;
/* rgb */ color: rgb(81, 91, 176);
/* oklch */ color: oklch(50.6% 0.134 275.5);

Tailwind

colors: {
  custom: {
    50: '#8989c8',
    500: '#515bb0',
    950: '#000000',
  },
}

SCSS

$custom: #515bb0;
$custom-light: #8989c8;
$custom-dark: #000000;

JSON

{
  "hex": "#515bb0",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 176
  },
  "hsl": {
    "h": 233.684,
    "s": 37.549,
    "l": 50.392
  },
  "oklch": {
    "l": 0.50619,
    "c": 0.13374,
    "h": 275.5
  },
  "luminance": 0.12366
}

Semantic roles & 50–950 ramp

primary

#515BB0

secondary

#C4BF99

accent

#C15ACE

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515BB0

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

Preview Lab → · Contrast checker → · Palette generator →