#517FC8#517FC8

#517FC8 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 59.7% C 0.123 H 259.3°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#517FC8
RGB	rgb(81, 127, 200)
HSL	hsl(217, 52%, 55%)
HSV	hsv(217, 60%, 78%)
CMYK	cmyk(59.5%, 36.5%, 0%, 21.6%)
CIE-LAB	lab(53.05, 6.55, -42.67)
CIE-LCH	lch(53.05, 43.17, 278.73°)
OKLab	oklab(59.71% -0.0229 -0.1209)
OKLCH	oklch(59.71% 0.123 259.3)
XYZ	xyz(21.4044, 21.0963, 57.5764)
Luminance	0.2110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FC8 #C89A51

analogous

#51BAC8 #517FC8 #5F51C8

triadic

#517FC8 #C8517F #7FC851

tetradic

#517FC8 #C851BA #C89A51 #51C85F

square

#517FC8 #C851BA #C89A51 #51C85F

split-complementary

#517FC8 #C85F51 #BAC851

monochromatic

#264679 #3561A7 #517FC8 #80A1D7 #AEC3E5

Accessibility & contrast

On white

4.02

#517FC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#517FC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FC8

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FC8	#FFFFFF	#000000	##000000
##517FC8	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6085CB

Deuteranopia (green-blind)

#507AC6

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517fc8;
/* rgb */ color: rgb(81, 127, 200);
/* oklch */ color: oklch(59.7% 0.123 259.3);

Tailwind

colors: {
  custom: {
    50: '#8ba3d9',
    500: '#517fc8',
    950: '#000000',
  },
}

SCSS

$custom: #517fc8;
$custom-light: #8ba3d9;
$custom-dark: #000000;

JSON

{
  "hex": "#517fc8",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 200
  },
  "hsl": {
    "h": 216.807,
    "s": 51.965,
    "l": 55.098
  },
  "oklch": {
    "l": 0.59712,
    "c": 0.12306,
    "h": 259.3
  },
  "luminance": 0.21098
}

Semantic roles & 50–950 ramp

primary

#517FC8

secondary

#D3C0A1

accent

#A44CDB

background

#F9FAFD

surface

#F1F3FA

border

#CBCDD3

text

#0D0F14

muted

#7E7F83

Preview Lab

Preview with #517FC8

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

Preview Lab → · Contrast checker → · Palette generator →