#516EBB#516EBB

#516EBB is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.3% C 0.125 H 266.8°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#516EBB
RGB	rgb(81, 110, 187)
HSL	hsl(224, 44%, 53%)
HSV	hsv(224, 57%, 73%)
CMYK	cmyk(56.7%, 41.2%, 0%, 26.7%)
CIE-LAB	lab(47.61, 12.62, -43.85)
CIE-LCH	lch(47.61, 45.63, 286.05°)
OKLab	oklab(55.27% -0.007 -0.1245)
OKLCH	oklch(55.27% 0.125 266.8)
XYZ	xyz(17.9359, 16.4877, 49.2413)
Luminance	0.1649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#516EBB #BB9E51

analogous

#51A3BB #516EBB #6951BB

triadic

#516EBB #BB516E #6EBB51

tetradic

#516EBB #BB51A3 #BB9E51 #51BB69

square

#516EBB #BB51A3 #BB9E51 #51BB69

split-complementary

#516EBB #BB6951 #A3BB51

monochromatic

#293A69 #3A5395 #516EBB #7D93CC #A9B7DD

Accessibility & contrast

On white

4.89

#516EBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#516EBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #516EBB

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##516EBB	#FFFFFF	#000000	##FFFFFF
##516EBB	1.00	4.89	4.30	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D76BE

Deuteranopia (green-blind)

#406DB9

Tritanopia (blue-blind)

#087F8B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #516ebb;
/* rgb */ color: rgb(81, 110, 187);
/* oklch */ color: oklch(55.3% 0.125 266.8);

Tailwind

colors: {
  custom: {
    50: '#8a97d0',
    500: '#516ebb',
    950: '#000000',
  },
}

SCSS

$custom: #516ebb;
$custom-light: #8a97d0;
$custom-dark: #000000;

JSON

{
  "hex": "#516ebb",
  "rgb": {
    "r": 81,
    "g": 110,
    "b": 187
  },
  "hsl": {
    "h": 223.585,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55272,
    "c": 0.12473,
    "h": 266.8
  },
  "luminance": 0.16489
}

Semantic roles & 50–950 ramp

primary

#516EBB

secondary

#CBBE9D

accent

#B154D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #516EBB

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

Preview Lab → · Contrast checker → · Palette generator →