#5171EE#5171EE

#5171EE is a mid, vivid blue. Relative luminance 0.197; OKLCH L 59.3% C 0.191 H 269.0°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#5171EE
RGB	rgb(81, 113, 238)
HSL	hsl(228, 82%, 63%)
HSV	hsv(228, 66%, 93%)
CMYK	cmyk(66%, 52.5%, 0%, 6.7%)
CIE-LAB	lab(51.53, 28.10, -66.54)
CIE-LCH	lch(51.53, 72.23, 292.90°)
OKLab	oklab(59.27% -0.0032 -0.1912)
OKLCH	oklch(59.27% 0.191 269)
XYZ	xyz(24.7258, 19.7303, 83.3776)
Luminance	0.1973 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171EE #EECE51

analogous

#51BFEE #5171EE #8051EE

triadic

#5171EE #EE5171 #71EE51

tetradic

#5171EE #EE51BF #EECE51 #51EE80

square

#5171EE #EE51BF #EECE51 #51EE80

split-complementary

#5171EE #EE8051 #BFEE51

monochromatic

#1132B3 #1943E9 #5171EE #899EF3 #C1CCF9

Accessibility & contrast

On white

4.25

#5171EE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#5171EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171EE

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171EE	#FFFFFF	#000000	##000000
##5171EE	1.00	4.25	4.95	4.95
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B82F2

Deuteranopia (green-blind)

#0074EB

Tritanopia (blue-blind)

#008FA5

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #5171ee;
/* rgb */ color: rgb(81, 113, 238);
/* oklch */ color: oklch(59.3% 0.191 269.0);

Tailwind

colors: {
  custom: {
    50: '#9299f4',
    500: '#5171ee',
    950: '#000000',
  },
}

SCSS

$custom: #5171ee;
$custom-light: #9299f4;
$custom-dark: #000000;

JSON

{
  "hex": "#5171ee",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 238
  },
  "hsl": {
    "h": 227.771,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.59265,
    "c": 0.19122,
    "h": 269
  },
  "luminance": 0.19733
}

Semantic roles & 50–950 ramp

primary

#5171EE

secondary

#EADEB1

accent

#B307DF

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0D17

muted

#7E7E85

Preview Lab

Preview with #5171EE

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

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