#517BDA#517BDA

#517BDA is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.9% C 0.152 H 264.3°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#517BDA
RGB	rgb(81, 123, 218)
HSL	hsl(222, 65%, 59%)
HSV	hsv(222, 63%, 85%)
CMYK	cmyk(62.8%, 43.6%, 0%, 14.5%)
CIE-LAB	lab(52.92, 15.07, -53.08)
CIE-LCH	lch(52.92, 55.18, 285.85°)
OKLab	oklab(59.93% -0.015 -0.1514)
OKLCH	oklch(59.93% 0.152 264.3)
XYZ	xyz(23.1268, 20.9751, 69.1459)
Luminance	0.2098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BDA #DAB051

analogous

#51BFDA #517BDA #6B51DA

triadic

#517BDA #DA517B #7BDA51

tetradic

#517BDA #DA51BF #DAB051 #51DA6B

square

#517BDA #DA51BF #DAB051 #51DA6B

split-complementary

#517BDA #DA6B51 #BFDA51

monochromatic

#1F4292 #2A59C4 #517BDA #83A1E5 #B6C8EF

Accessibility & contrast

On white

4.04

#517BDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#517BDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BDA

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BDA	#FFFFFF	#000000	##000000
##517BDA	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F85DE

Deuteranopia (green-blind)

#3978D8

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517bda;
/* rgb */ color: rgb(81, 123, 218);
/* oklch */ color: oklch(59.9% 0.152 264.3);

Tailwind

colors: {
  custom: {
    50: '#8ea0e6',
    500: '#517bda',
    950: '#000000',
  },
}

SCSS

$custom: #517bda;
$custom-light: #8ea0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#517bda",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 218
  },
  "hsl": {
    "h": 221.606,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.59926,
    "c": 0.15219,
    "h": 264.3
  },
  "luminance": 0.20977
}

Semantic roles & 50–950 ramp

primary

#517BDA

secondary

#DECEA8

accent

#B440E8

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #517BDA

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

Preview Lab → · Contrast checker → · Palette generator →