#515BB2#515BB2

#515BB2 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.8% C 0.137 H 275.5°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#515BB2
RGB	rgb(81, 91, 178)
HSL	hsl(234, 39%, 51%)
HSV	hsv(234, 54%, 70%)
CMYK	cmyk(54.5%, 48.9%, 0%, 30.2%)
CIE-LAB	lab(41.91, 21.57, -47.69)
CIE-LCH	lch(41.91, 52.34, 294.34°)
OKLab	oklab(50.75% 0.0131 -0.136)
OKLCH	oklch(50.75% 0.137 275.5)
XYZ	xyz(15.1677, 12.4448, 43.7137)
Luminance	0.1245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BB2 #B2A851

analogous

#518BB2 #515BB2 #7751B2

triadic

#515BB2 #B2515B #5BB251

tetradic

#515BB2 #B2518B #B2A851 #51B277

square

#515BB2 #B2518B #B2A851 #51B277

split-complementary

#515BB2 #B27751 #8BB251

monochromatic

#2A2F5F #3D4589 #515BB2 #7B83C5 #A6ABD8

Accessibility & contrast

On white

6.02

#515BB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#515BB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BB2

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BB2	#FFFFFF	#000000	##FFFFFF
##515BB2	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3267B5

Deuteranopia (green-blind)

#255FB0

Tritanopia (blue-blind)

#226E7E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #515bb2;
/* rgb */ color: rgb(81, 91, 178);
/* oklch */ color: oklch(50.8% 0.137 275.5);

Tailwind

colors: {
  custom: {
    50: '#8989c9',
    500: '#515bb2',
    950: '#000000',
  },
}

SCSS

$custom: #515bb2;
$custom-light: #8989c9;
$custom-dark: #000000;

JSON

{
  "hex": "#515bb2",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 178
  },
  "hsl": {
    "h": 233.814,
    "s": 38.645,
    "l": 50.784
  },
  "oklch": {
    "l": 0.50753,
    "c": 0.13662,
    "h": 275.5
  },
  "luminance": 0.12446
}

Semantic roles & 50–950 ramp

primary

#515BB2

secondary

#C5C09A

accent

#C259CF

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515BB2

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

Preview Lab → · Contrast checker → · Palette generator →