#517EC8#517EC8

#517EC8 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.5% C 0.124 H 259.9°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#517EC8
RGB	rgb(81, 126, 200)
HSL	hsl(217, 52%, 55%)
HSV	hsv(217, 60%, 78%)
CMYK	cmyk(59.5%, 37%, 0%, 21.6%)
CIE-LAB	lab(52.77, 7.15, -43.12)
CIE-LCH	lch(52.77, 43.71, 279.42°)
OKLab	oklab(59.49% -0.0218 -0.1222)
OKLCH	oklch(59.49% 0.124 259.9)
XYZ	xyz(21.2759, 20.8393, 57.5336)
Luminance	0.2084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517EC8 #C89B51

analogous

#51B9C8 #517EC8 #6051C8

triadic

#517EC8 #C8517E #7EC851

tetradic

#517EC8 #C851B9 #C89B51 #51C860

square

#517EC8 #C851B9 #C89B51 #51C860

split-complementary

#517EC8 #C86051 #B9C851

monochromatic

#264579 #3560A7 #517EC8 #80A0D7 #AEC3E5

Accessibility & contrast

On white

4.06

#517EC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#517EC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517EC8

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517EC8	#FFFFFF	#000000	##000000
##517EC8	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F84CB

Deuteranopia (green-blind)

#4F79C6

Tritanopia (blue-blind)

#008F99

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517ec8;
/* rgb */ color: rgb(81, 126, 200);
/* oklch */ color: oklch(59.5% 0.124 259.9);

Tailwind

colors: {
  custom: {
    50: '#8ba3d9',
    500: '#517ec8',
    950: '#000000',
  },
}

SCSS

$custom: #517ec8;
$custom-light: #8ba3d9;
$custom-dark: #000000;

JSON

{
  "hex": "#517ec8",
  "rgb": {
    "r": 81,
    "g": 126,
    "b": 200
  },
  "hsl": {
    "h": 217.311,
    "s": 51.965,
    "l": 55.098
  },
  "oklch": {
    "l": 0.59493,
    "c": 0.12415,
    "h": 259.9
  },
  "luminance": 0.20841
}

Semantic roles & 50–950 ramp

primary

#517EC8

secondary

#D3C0A1

accent

#A54CDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0F14

muted

#7E7E83

Preview Lab

Preview with #517EC8

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

Preview Lab → · Contrast checker → · Palette generator →