#516BBB#516BBB

#516BBB is a mid, vivid blue. Relative luminance 0.159; OKLCH L 54.6% C 0.128 H 268.4°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#516BBB
RGB	rgb(81, 107, 187)
HSL	hsl(225, 44%, 53%)
HSV	hsv(225, 57%, 73%)
CMYK	cmyk(56.7%, 42.8%, 0%, 26.7%)
CIE-LAB	lab(46.78, 14.49, -45.17)
CIE-LCH	lch(46.78, 47.43, 287.78°)
OKLab	oklab(54.63% -0.0036 -0.1284)
OKLCH	oklch(54.63% 0.128 268.4)
XYZ	xyz(17.6177, 15.8512, 49.1353)
Luminance	0.1585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516BBB #BBA151

analogous

#51A0BB #516BBB #6C51BB

triadic

#516BBB #BB516B #6BBB51

tetradic

#516BBB #BB51A0 #BBA151 #51BB6C

square

#516BBB #BB51A0 #BBA151 #51BB6C

split-complementary

#516BBB #BB6C51 #A0BB51

monochromatic

#293969 #3A5095 #516BBB #7D90CC #A9B6DD

Accessibility & contrast

On white

5.04

#516BBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#516BBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516BBB

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516BBB	#FFFFFF	#000000	##FFFFFF
##516BBB	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4874BE

Deuteranopia (green-blind)

#3B6AB9

Tritanopia (blue-blind)

#0A7D8A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #516bbb;
/* rgb */ color: rgb(81, 107, 187);
/* oklch */ color: oklch(54.6% 0.128 268.4);

Tailwind

colors: {
  custom: {
    50: '#8a95d0',
    500: '#516bbb',
    950: '#000000',
  },
}

SCSS

$custom: #516bbb;
$custom-light: #8a95d0;
$custom-dark: #000000;

JSON

{
  "hex": "#516bbb",
  "rgb": {
    "r": 81,
    "g": 107,
    "b": 187
  },
  "hsl": {
    "h": 225.283,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.54634,
    "c": 0.12847,
    "h": 268.4
  },
  "luminance": 0.15853
}

Semantic roles & 50–950 ramp

primary

#516BBB

secondary

#CBC09D

accent

#B454D4

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #516BBB

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

Preview Lab → · Contrast checker → · Palette generator →