#517BCF#517BCF

#517BCF is a mid, vivid blue. Relative luminance 0.204; OKLCH L 59.3% C 0.137 H 262.9°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#517BCF
RGB	rgb(81, 123, 207)
HSL	hsl(220, 57%, 56%)
HSV	hsv(220, 61%, 81%)
CMYK	cmyk(60.9%, 40.6%, 0%, 18.8%)
CIE-LAB	lab(52.31, 11.33, -47.84)
CIE-LCH	lch(52.31, 49.16, 283.33°)
OKLab	oklab(59.25% -0.0171 -0.1361)
OKLCH	oklch(59.25% 0.137 262.9)
XYZ	xyz(21.7349, 20.4183, 61.8151)
Luminance	0.2042 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BCF #CFA551

analogous

#51BACF #517BCF #6651CF

triadic

#517BCF #CF517B #7BCF51

tetradic

#517BCF #CF51BA #CFA551 #51CF66

square

#517BCF #CF51BA #CFA551 #51CF66

split-complementary

#517BCF #CF6651 #BACF51

monochromatic

#244382 #315CB2 #517BCF #819FDC #B1C4E9

Accessibility & contrast

On white

4.13

#517BCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#517BCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BCF

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BCF	#FFFFFF	#000000	##000000
##517BCF	1.00	4.13	5.08	5.08
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5683D2

Deuteranopia (green-blind)

#4477CD

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #517bcf;
/* rgb */ color: rgb(81, 123, 207);
/* oklch */ color: oklch(59.3% 0.137 262.9);

Tailwind

colors: {
  custom: {
    50: '#8ca0de',
    500: '#517bcf',
    950: '#000000',
  },
}

SCSS

$custom: #517bcf;
$custom-light: #8ca0de;
$custom-dark: #000000;

JSON

{
  "hex": "#517bcf",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 207
  },
  "hsl": {
    "h": 220,
    "s": 56.757,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59253,
    "c": 0.13714,
    "h": 262.9
  },
  "luminance": 0.2042
}

Semantic roles & 50–950 ramp

primary

#517BCF

secondary

#D8C7A4

accent

#AD48E0

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517BCF

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

Preview Lab → · Contrast checker → · Palette generator →