#517BBF#517BBF

#517BBF is a mid, moderate blue. Relative luminance 0.197; OKLCH L 58.3% C 0.115 H 259.6°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#517BBF
RGB	rgb(81, 123, 191)
HSL	hsl(217, 46%, 53%)
HSV	hsv(217, 58%, 75%)
CMYK	cmyk(57.6%, 35.6%, 0%, 25.1%)
CIE-LAB	lab(51.47, 5.97, -40.04)
CIE-LCH	lch(51.47, 40.48, 278.49°)
OKLab	oklab(58.33% -0.0207 -0.1133)
OKLCH	oklch(58.33% 0.115 259.6)
XYZ	xyz(19.8770, 19.6752, 52.0303)
Luminance	0.1968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BBF #BF9551

analogous

#51B2BF #517BBF #5E51BF

triadic

#517BBF #BF517B #7BBF51

tetradic

#517BBF #BF51B2 #BF9551 #51BF5E

square

#517BBF #BF51B2 #BF9551 #51BF5E

split-complementary

#517BBF #BF5E51 #B2BF51

monochromatic

#28436D #395E9A #517BBF #7E9DCF #AABFE0

Accessibility & contrast

On white

4.25

#517BBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#517BBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BBF

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BBF	#FFFFFF	#000000	##000000
##517BBF	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F80C2

Deuteranopia (green-blind)

#5176BE

Tritanopia (blue-blind)

#008A94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #517bbf;
/* rgb */ color: rgb(81, 123, 191);
/* oklch */ color: oklch(58.3% 0.115 259.6);

Tailwind

colors: {
  custom: {
    50: '#8aa0d2',
    500: '#517bbf',
    950: '#000000',
  },
}

SCSS

$custom: #517bbf;
$custom-light: #8aa0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#517bbf",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 191
  },
  "hsl": {
    "h": 217.091,
    "s": 46.218,
    "l": 53.333
  },
  "oklch": {
    "l": 0.58329,
    "c": 0.11514,
    "h": 259.6
  },
  "luminance": 0.19677
}

Semantic roles & 50–950 ramp

primary

#517BBF

secondary

#CEBB9E

accent

#A352D6

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #517BBF

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

Preview Lab → · Contrast checker → · Palette generator →