#5171BE#5171BE

#5171BE is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.1% C 0.125 H 265.5°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#5171BE
RGB	rgb(81, 113, 190)
HSL	hsl(222, 46%, 53%)
HSV	hsv(222, 57%, 75%)
CMYK	cmyk(57.4%, 40.5%, 0%, 25.5%)
CIE-LAB	lab(48.61, 11.76, -43.99)
CIE-LCH	lch(48.61, 45.54, 284.97°)
OKLab	oklab(56.09% -0.0097 -0.1249)
OKLCH	oklch(56.09% 0.125 265.5)
XYZ	xyz(18.5896, 17.2758, 51.0602)
Luminance	0.1728 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171BE #BE9E51

analogous

#51A8BE #5171BE #6751BE

triadic

#5171BE #BE5171 #71BE51

tetradic

#5171BE #BE51A8 #BE9E51 #51BE67

square

#5171BE #BE51A8 #BE9E51 #51BE67

split-complementary

#5171BE #BE6751 #A8BE51

monochromatic

#283C6C #395599 #5171BE #7E95CF #AABADF

Accessibility & contrast

On white

4.71

#5171BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#5171BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5171BE

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171BE	#FFFFFF	#000000	##FFFFFF
##5171BE	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5079C1

Deuteranopia (green-blind)

#426FBC

Tritanopia (blue-blind)

#00828E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5171be;
/* rgb */ color: rgb(81, 113, 190);
/* oklch */ color: oklch(56.1% 0.125 265.5);

Tailwind

colors: {
  custom: {
    50: '#8a99d2',
    500: '#5171be',
    950: '#000000',
  },
}

SCSS

$custom: #5171be;
$custom-light: #8a99d2;
$custom-dark: #000000;

JSON

{
  "hex": "#5171be",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 190
  },
  "hsl": {
    "h": 222.385,
    "s": 45.607,
    "l": 53.137
  },
  "oklch": {
    "l": 0.56094,
    "c": 0.12531,
    "h": 265.5
  },
  "luminance": 0.17277
}

Semantic roles & 50–950 ramp

primary

#5171BE

secondary

#CDBF9E

accent

#AF53D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #5171BE

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

Preview Lab → · Contrast checker → · Palette generator →