#5170C8#5170C8

#5170C8 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.5% C 0.141 H 267.2°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#5170C8
RGB	rgb(81, 112, 200)
HSL	hsl(224, 52%, 55%)
HSV	hsv(224, 60%, 78%)
CMYK	cmyk(59.5%, 44%, 0%, 21.6%)
CIE-LAB	lab(48.89, 15.74, -49.29)
CIE-LCH	lch(48.89, 51.74, 287.71°)
OKLab	oklab(56.5% -0.0068 -0.1405)
OKLCH	oklch(56.5% 0.141 267.2)
XYZ	xyz(19.6093, 17.5062, 56.9781)
Luminance	0.1751 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5170C8 #C8A951

analogous

#51ABC8 #5170C8 #6E51C8

triadic

#5170C8 #C85170 #70C851

tetradic

#5170C8 #C851AB #C8A951 #51C86E

square

#5170C8 #C851AB #C8A951 #51C86E

split-complementary

#5170C8 #C86E51 #ABC851

monochromatic

#263C79 #3553A7 #5170C8 #8096D7 #AEBCE5

Accessibility & contrast

On white

4.67

#5170C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#5170C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5170C8

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5170C8	#FFFFFF	#000000	##FFFFFF
##5170C8	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#487ACB

Deuteranopia (green-blind)

#376FC6

Tritanopia (blue-blind)

#008492

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #5170c8;
/* rgb */ color: rgb(81, 112, 200);
/* oklch */ color: oklch(56.5% 0.141 267.2);

Tailwind

colors: {
  custom: {
    50: '#8c98d9',
    500: '#5170c8',
    950: '#000000',
  },
}

SCSS

$custom: #5170c8;
$custom-light: #8c98d9;
$custom-dark: #000000;

JSON

{
  "hex": "#5170c8",
  "rgb": {
    "r": 81,
    "g": 112,
    "b": 200
  },
  "hsl": {
    "h": 224.37,
    "s": 51.965,
    "l": 55.098
  },
  "oklch": {
    "l": 0.56496,
    "c": 0.14062,
    "h": 267.2
  },
  "luminance": 0.17508
}

Semantic roles & 50–950 ramp

primary

#5170C8

secondary

#D3C6A1

accent

#B64CDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #5170C8

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

Preview Lab → · Contrast checker → · Palette generator →