#515BBF#515BBF

#515BBF is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.7% C 0.155 H 275.3°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#515BBF
RGB	rgb(81, 91, 191)
HSL	hsl(235, 46%, 53%)
HSV	hsv(235, 58%, 75%)
CMYK	cmyk(57.6%, 52.4%, 0%, 25.1%)
CIE-LAB	lab(42.75, 25.89, -53.94)
CIE-LCH	lch(42.75, 59.83, 295.64°)
OKLab	oklab(51.65% 0.0143 -0.1544)
OKLCH	oklch(51.65% 0.155 275.3)
XYZ	xyz(16.5354, 12.9919, 50.9165)
Luminance	0.1299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BBF #BFB551

analogous

#5192BF #515BBF #7E51BF

triadic

#515BBF #BF515B #5BBF51

tetradic

#515BBF #BF5192 #BFB551 #51BF7E

square

#515BBF #BF5192 #BFB551 #51BF7E

split-complementary

#515BBF #BF7E51 #92BF51

monochromatic

#282F6D #39429A #515BBF #7E85CF #AAAFE0

Accessibility & contrast

On white

5.84

#515BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#515BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BBF

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BBF	#FFFFFF	#000000	##FFFFFF
##515BBF	1.00	5.84	3.60	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#226AC3

Deuteranopia (green-blind)

#0560BD

Tritanopia (blue-blind)

#077284

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515bbf;
/* rgb */ color: rgb(81, 91, 191);
/* oklch */ color: oklch(51.7% 0.155 275.3);

Tailwind

colors: {
  custom: {
    50: '#8b89d3',
    500: '#515bbf',
    950: '#000000',
  },
}

SCSS

$custom: #515bbf;
$custom-light: #8b89d3;
$custom-dark: #000000;

JSON

{
  "hex": "#515bbf",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 191
  },
  "hsl": {
    "h": 234.545,
    "s": 46.218,
    "l": 53.333
  },
  "oklch": {
    "l": 0.51653,
    "c": 0.15504,
    "h": 275.3
  },
  "luminance": 0.12993
}

Semantic roles & 50–950 ramp

primary

#515BBF

secondary

#CEC99E

accent

#CA52D6

background

#F9F8FD

surface

#F1F0FA

border

#CBCBD3

text

#0D0B14

muted

#7E7C83

Preview Lab

Preview with #515BBF

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

Preview Lab → · Contrast checker → · Palette generator →