#5171CD#5171CD

#5171CD is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.0% C 0.146 H 267.3°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#5171CD
RGB	rgb(81, 113, 205)
HSL	hsl(225, 55%, 56%)
HSV	hsv(225, 60%, 80%)
CMYK	cmyk(60.5%, 44.9%, 0%, 19.6%)
CIE-LAB	lab(49.45, 16.81, -51.25)
CIE-LCH	lch(49.45, 53.93, 288.16°)
OKLab	oklab(57.02% -0.007 -0.1462)
OKLCH	oklch(57.02% 0.146 267.3)
XYZ	xyz(20.3142, 17.9656, 60.1430)
Luminance	0.1797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171CD #CDAD51

analogous

#51AFCD #5171CD #6F51CD

triadic

#5171CD #CD5171 #71CD51

tetradic

#5171CD #CD51AF #CDAD51 #51CD6F

square

#5171CD #CD51AF #CDAD51 #51CD6F

split-complementary

#5171CD #CD6F51 #AFCD51

monochromatic

#253C7F #3252AF #5171CD #8198DB #B0BFE8

Accessibility & contrast

On white

4.57

#5171CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#5171CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171CD

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171CD	#FFFFFF	#000000	##000000
##5171CD	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#467CD0

Deuteranopia (green-blind)

#3370CB

Tritanopia (blue-blind)

#008695

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #5171cd;
/* rgb */ color: rgb(81, 113, 205);
/* oklch */ color: oklch(57.0% 0.146 267.3);

Tailwind

colors: {
  custom: {
    50: '#8c99dd',
    500: '#5171cd',
    950: '#000000',
  },
}

SCSS

$custom: #5171cd;
$custom-light: #8c99dd;
$custom-dark: #000000;

JSON

{
  "hex": "#5171cd",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 205
  },
  "hsl": {
    "h": 224.516,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.57022,
    "c": 0.14637,
    "h": 267.3
  },
  "luminance": 0.17967
}

Semantic roles & 50–950 ramp

primary

#5171CD

secondary

#D7C9A3

accent

#B849DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #5171CD

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

Preview Lab → · Contrast checker → · Palette generator →