#515BCB#515BCB

#515BCB is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.5% C 0.172 H 275.0°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#515BCB
RGB	rgb(81, 91, 203)
HSL	hsl(235, 54%, 56%)
HSV	hsv(235, 60%, 80%)
CMYK	cmyk(60.1%, 55.2%, 0%, 20.4%)
CIE-LAB	lab(43.57, 29.89, -59.57)
CIE-LCH	lch(43.57, 66.65, 296.65°)
OKLab	oklab(52.53% 0.0149 -0.1709)
OKLCH	oklch(52.53% 0.172 275)
XYZ	xyz(17.9104, 13.5419, 58.1584)
Luminance	0.1354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BCB #CBC151

analogous

#5198CB #515BCB #8451CB

triadic

#515BCB #CB515B #5BCB51

tetradic

#515BCB #CB5198 #CBC151 #51CB84

square

#515BCB #CB5198 #CBC151 #51CB84

split-complementary

#515BCB #CB8451 #98CB51

monochromatic

#252C7C #333DAC #515BCB #8087D9 #AFB4E7

Accessibility & contrast

On white

5.66

#515BCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#515BCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BCB

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BCB	#FFFFFF	#000000	##FFFFFF
##515BCB	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#016CCF

Deuteranopia (green-blind)

#0062C9

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #515bcb;
/* rgb */ color: rgb(81, 91, 203);
/* oklch */ color: oklch(52.5% 0.172 275.0);

Tailwind

colors: {
  custom: {
    50: '#8d89dc',
    500: '#515bcb',
    950: '#000000',
  },
}

SCSS

$custom: #515bcb;
$custom-light: #8d89dc;
$custom-dark: #000000;

JSON

{
  "hex": "#515bcb",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 203
  },
  "hsl": {
    "h": 235.082,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.52526,
    "c": 0.17158,
    "h": 275
  },
  "luminance": 0.13543
}

Semantic roles & 50–950 ramp

primary

#515BCB

secondary

#D5D1A3

accent

#D14ADD

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #515BCB

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

Preview Lab → · Contrast checker → · Palette generator →