#5171BD#5171BD

#5171BD is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.0% C 0.124 H 265.4°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#5171BD
RGB	rgb(81, 113, 189)
HSL	hsl(222, 45%, 53%)
HSV	hsv(222, 57%, 74%)
CMYK	cmyk(57.1%, 40.2%, 0%, 25.9%)
CIE-LAB	lab(48.55, 11.43, -43.50)
CIE-LCH	lch(48.55, 44.98, 284.72°)
OKLab	oklab(56.03% -0.01 -0.1235)
OKLCH	oklch(56.03% 0.124 265.4)
XYZ	xyz(18.4807, 17.2322, 50.4865)
Luminance	0.1723 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171BD #BD9D51

analogous

#51A7BD #5171BD #6751BD

triadic

#5171BD #BD5171 #71BD51

tetradic

#5171BD #BD51A7 #BD9D51 #51BD67

square

#5171BD #BD51A7 #BD9D51 #51BD67

split-complementary

#5171BD #BD6751 #A7BD51

monochromatic

#293C6B #395597 #5171BD #7D95CE #AAB9DF

Accessibility & contrast

On white

4.72

#5171BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#5171BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5171BD

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171BD	#FFFFFF	#000000	##FFFFFF
##5171BD	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5179C0

Deuteranopia (green-blind)

#436FBB

Tritanopia (blue-blind)

#00828E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5171bd;
/* rgb */ color: rgb(81, 113, 189);
/* oklch */ color: oklch(56.0% 0.124 265.4);

Tailwind

colors: {
  custom: {
    50: '#8a99d1',
    500: '#5171bd',
    950: '#000000',
  },
}

SCSS

$custom: #5171bd;
$custom-light: #8a99d1;
$custom-dark: #000000;

JSON

{
  "hex": "#5171bd",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 189
  },
  "hsl": {
    "h": 222.222,
    "s": 45,
    "l": 52.941
  },
  "oklch": {
    "l": 0.56034,
    "c": 0.12389,
    "h": 265.4
  },
  "luminance": 0.17234
}

Semantic roles & 50–950 ramp

primary

#5171BD

secondary

#CCBE9E

accent

#AE53D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #5171BD

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

Preview Lab → · Contrast checker → · Palette generator →