#517FDD#517FDD

#517FDD is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.0% C 0.152 H 263.0°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#517FDD
RGB	rgb(81, 127, 221)
HSL	hsl(220, 67%, 59%)
HSV	hsv(220, 63%, 87%)
CMYK	cmyk(63.3%, 42.5%, 0%, 13.3%)
CIE-LAB	lab(54.18, 13.65, -52.75)
CIE-LCH	lch(54.18, 54.49, 284.51°)
OKLab	oklab(60.95% -0.0184 -0.1504)
OKLCH	oklch(60.95% 0.152 263)
XYZ	xyz(24.0293, 22.1463, 71.4009)
Luminance	0.2215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FDD #DDAF51

analogous

#51C5DD #517FDD #6951DD

triadic

#517FDD #DD517F #7FDD51

tetradic

#517FDD #DD51C5 #DDAF51 #51DD69

square

#517FDD #DD51C5 #DDAF51 #51DD69

split-complementary

#517FDD #DD6951 #C5DD51

monochromatic

#1D4596 #275DC9 #517FDD #84A5E7 #B7CAF1

Accessibility & contrast

On white

3.87

#517FDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#517FDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FDD

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FDD	#FFFFFF	#000000	##000000
##517FDD	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5488E1

Deuteranopia (green-blind)

#3E7CDB

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #517fdd;
/* rgb */ color: rgb(81, 127, 221);
/* oklch */ color: oklch(61.0% 0.152 263.0);

Tailwind

colors: {
  custom: {
    50: '#8fa3e8',
    500: '#517fdd',
    950: '#000000',
  },
}

SCSS

$custom: #517fdd;
$custom-light: #8fa3e8;
$custom-dark: #000000;

JSON

{
  "hex": "#517fdd",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 221
  },
  "hsl": {
    "h": 220.286,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60951,
    "c": 0.15157,
    "h": 263
  },
  "luminance": 0.22149
}

Semantic roles & 50–950 ramp

primary

#517FDD

secondary

#E0CEAA

accent

#B13EEA

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #517FDD

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

Preview Lab → · Contrast checker → · Palette generator →