#515BB3#515BB3

#515BB3 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.8% C 0.138 H 275.5°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#515BB3
RGB	rgb(81, 91, 179)
HSL	hsl(234, 39%, 51%)
HSV	hsv(234, 55%, 70%)
CMYK	cmyk(54.7%, 49.2%, 0%, 29.8%)
CIE-LAB	lab(41.98, 21.90, -48.18)
CIE-LCH	lch(41.98, 52.92, 294.45°)
OKLab	oklab(50.82% 0.0132 -0.1374)
OKLCH	oklch(50.82% 0.138 275.5)
XYZ	xyz(15.2685, 12.4851, 44.2444)
Luminance	0.1249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BB3 #B3A951

analogous

#518CB3 #515BB3 #7851B3

triadic

#515BB3 #B3515B #5BB351

tetradic

#515BB3 #B3518C #B3A951 #51B378

square

#515BB3 #B3518C #B3A951 #51B378

split-complementary

#515BB3 #B37851 #8CB351

monochromatic

#2A2F60 #3C448A #515BB3 #7C83C6 #A6ABD8

Accessibility & contrast

On white

6.00

#515BB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#515BB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BB3

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BB3	#FFFFFF	#000000	##FFFFFF
##515BB3	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3167B6

Deuteranopia (green-blind)

#245FB1

Tritanopia (blue-blind)

#206F7E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #515bb3;
/* rgb */ color: rgb(81, 91, 179);
/* oklch */ color: oklch(50.8% 0.138 275.5);

Tailwind

colors: {
  custom: {
    50: '#8989ca',
    500: '#515bb3',
    950: '#000000',
  },
}

SCSS

$custom: #515bb3;
$custom-light: #8989ca;
$custom-dark: #000000;

JSON

{
  "hex": "#515bb3",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 179
  },
  "hsl": {
    "h": 233.878,
    "s": 39.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.50821,
    "c": 0.13805,
    "h": 275.5
  },
  "luminance": 0.12486
}

Semantic roles & 50–950 ramp

primary

#515BB3

secondary

#C6C19A

accent

#C359CF

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515BB3

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

Preview Lab → · Contrast checker → · Palette generator →