#517CC5#517CC5

#517CC5 is a mid, vivid blue. Relative luminance 0.202; OKLCH L 58.9% C 0.122 H 260.4°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#517CC5
RGB	rgb(81, 124, 197)
HSL	hsl(218, 50%, 55%)
HSV	hsv(218, 59%, 77%)
CMYK	cmyk(58.9%, 37.1%, 0%, 22.7%)
CIE-LAB	lab(52.06, 7.36, -42.54)
CIE-LCH	lch(52.06, 43.17, 279.82°)
OKLab	oklab(58.89% -0.0203 -0.1206)
OKLCH	oklch(58.89% 0.122 260.4)
XYZ	xyz(20.6755, 20.1941, 55.6208)
Luminance	0.2020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CC5 #C59A51

analogous

#51B6C5 #517CC5 #6051C5

triadic

#517CC5 #C5517C #7CC551

tetradic

#517CC5 #C551B6 #C59A51 #51C560

square

#517CC5 #C551B6 #C59A51 #51C560

split-complementary

#517CC5 #C56051 #B6C551

monochromatic

#274475 #365EA3 #517CC5 #7F9FD4 #ADC1E4

Accessibility & contrast

On white

4.17

#517CC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#517CC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CC5

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CC5	#FFFFFF	#000000	##000000
##517CC5	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D82C8

Deuteranopia (green-blind)

#4E77C3

Tritanopia (blue-blind)

#008C97

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517cc5;
/* rgb */ color: rgb(81, 124, 197);
/* oklch */ color: oklch(58.9% 0.122 260.4);

Tailwind

colors: {
  custom: {
    50: '#8ba1d7',
    500: '#517cc5',
    950: '#000000',
  },
}

SCSS

$custom: #517cc5;
$custom-light: #8ba1d7;
$custom-dark: #000000;

JSON

{
  "hex": "#517cc5",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 197
  },
  "hsl": {
    "h": 217.759,
    "s": 50,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58885,
    "c": 0.12227,
    "h": 260.4
  },
  "luminance": 0.20196
}

Semantic roles & 50–950 ramp

primary

#517CC5

secondary

#D1BFA0

accent

#A64EDA

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0D0E14

muted

#7D7E83

Preview Lab

Preview with #517CC5

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

Preview Lab → · Contrast checker → · Palette generator →