#5170D8#5170D8

#5170D8 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.5% C 0.163 H 268.4°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#5170D8
RGB	rgb(81, 112, 216)
HSL	hsl(226, 63%, 58%)
HSV	hsv(226, 63%, 85%)
CMYK	cmyk(62.5%, 48.1%, 0%, 15.3%)
CIE-LAB	lab(49.85, 21.18, -56.87)
CIE-LCH	lch(49.85, 60.69, 290.43°)
OKLab	oklab(57.54% -0.0045 -0.1627)
OKLCH	oklch(57.54% 0.163 268.4)
XYZ	xyz(21.5780, 18.2936, 67.3463)
Luminance	0.1830 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5170D8 #D8B951

analogous

#51B3D8 #5170D8 #7551D8

triadic

#5170D8 #D85170 #70D851

tetradic

#5170D8 #D851B3 #D8B951 #51D875

square

#5170D8 #D851B3 #D8B951 #51D875

split-complementary

#5170D8 #D87551 #B3D851

monochromatic

#20398F #2B4DC1 #5170D8 #8399E3 #B5C2EE

Accessibility & contrast

On white

4.51

#5170D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#5170D8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5170D8

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5170D8	#FFFFFF	#000000	##000000
##5170D8	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A7DDC

Deuteranopia (green-blind)

#1E71D6

Tritanopia (blue-blind)

#00889A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #5170d8;
/* rgb */ color: rgb(81, 112, 216);
/* oklch */ color: oklch(57.5% 0.163 268.4);

Tailwind

colors: {
  custom: {
    50: '#8e98e5',
    500: '#5170d8',
    950: '#000000',
  },
}

SCSS

$custom: #5170d8;
$custom-light: #8e98e5;
$custom-dark: #000000;

JSON

{
  "hex": "#5170d8",
  "rgb": {
    "r": 81,
    "g": 112,
    "b": 216
  },
  "hsl": {
    "h": 226.222,
    "s": 63.38,
    "l": 58.235
  },
  "oklch": {
    "l": 0.57538,
    "c": 0.1628,
    "h": 268.4
  },
  "luminance": 0.18296
}

Semantic roles & 50–950 ramp

primary

#5170D8

secondary

#DDD1A8

accent

#C141E6

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #5170D8

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

Preview Lab → · Contrast checker → · Palette generator →