#5171DD#5171DD

#5171DD is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.1% C 0.168 H 268.4°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#5171DD
RGB	rgb(81, 113, 221)
HSL	hsl(226, 67%, 59%)
HSV	hsv(226, 63%, 87%)
CMYK	cmyk(63.3%, 48.9%, 0%, 13.3%)
CIE-LAB	lab(50.43, 22.27, -58.77)
CIE-LCH	lch(50.43, 62.85, 290.75°)
OKLab	oklab(58.08% -0.0048 -0.1683)
OKLCH	oklch(58.08% 0.168 268.4)
XYZ	xyz(22.3452, 18.7780, 70.8396)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171DD #DDBD51

analogous

#51B7DD #5171DD #7751DD

triadic

#5171DD #DD5171 #71DD51

tetradic

#5171DD #DD51B7 #DDBD51 #51DD77

square

#5171DD #DD51B7 #DDBD51 #51DD77

split-complementary

#5171DD #DD7751 #B7DD51

monochromatic

#1D3996 #274CC9 #5171DD #849BE7 #B7C5F1

Accessibility & contrast

On white

4.42

#5171DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#5171DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171DD

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171DD	#FFFFFF	#000000	##000000
##5171DD	1.00	4.42	4.76	4.76
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#377FE1

Deuteranopia (green-blind)

#1572DB

Tritanopia (blue-blind)

#008A9C

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #5171dd;
/* rgb */ color: rgb(81, 113, 221);
/* oklch */ color: oklch(58.1% 0.168 268.4);

Tailwind

colors: {
  custom: {
    50: '#8f99e8',
    500: '#5171dd',
    950: '#000000',
  },
}

SCSS

$custom: #5171dd;
$custom-light: #8f99e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5171dd",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 221
  },
  "hsl": {
    "h": 226.286,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.58076,
    "c": 0.1684,
    "h": 268.4
  },
  "luminance": 0.1878
}

Semantic roles & 50–950 ramp

primary

#5171DD

secondary

#E0D4AA

accent

#C33EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #5171DD

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

Preview Lab → · Contrast checker → · Palette generator →