#5170CD#5170CD

#5170CD is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.8% C 0.148 H 267.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#5170CD
RGB	rgb(81, 112, 205)
HSL	hsl(225, 55%, 56%)
HSV	hsv(225, 60%, 80%)
CMYK	cmyk(60.5%, 45.4%, 0%, 19.6%)
CIE-LAB	lab(49.18, 17.43, -51.68)
CIE-LCH	lch(49.18, 54.54, 288.64°)
OKLab	oklab(56.81% -0.006 -0.1475)
OKLCH	oklch(56.81% 0.148 267.7)
XYZ	xyz(20.2032, 17.7437, 60.1060)
Luminance	0.1774 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5170CD #CDAE51

analogous

#51AECD #5170CD #7051CD

triadic

#5170CD #CD5170 #70CD51

tetradic

#5170CD #CD51AE #CDAE51 #51CD70

square

#5170CD #CD51AE #CDAE51 #51CD70

split-complementary

#5170CD #CD7051 #AECD51

monochromatic

#253B7F #3251AF #5170CD #8197DB #B0BEE8

Accessibility & contrast

On white

4.62

#5170CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#5170CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5170CD

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5170CD	#FFFFFF	#000000	##FFFFFF
##5170CD	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#447BD0

Deuteranopia (green-blind)

#3170CB

Tritanopia (blue-blind)

#008594

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5170cd;
/* rgb */ color: rgb(81, 112, 205);
/* oklch */ color: oklch(56.8% 0.148 267.7);

Tailwind

colors: {
  custom: {
    50: '#8c98dd',
    500: '#5170cd',
    950: '#000000',
  },
}

SCSS

$custom: #5170cd;
$custom-light: #8c98dd;
$custom-dark: #000000;

JSON

{
  "hex": "#5170cd",
  "rgb": {
    "r": 81,
    "g": 112,
    "b": 205
  },
  "hsl": {
    "h": 225,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.56814,
    "c": 0.1476,
    "h": 267.7
  },
  "luminance": 0.17745
}

Semantic roles & 50–950 ramp

primary

#5170CD

secondary

#D7CAA3

accent

#B949DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #5170CD

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

Preview Lab → · Contrast checker → · Palette generator →