#5171CE#5171CE

#5171CE is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.1% C 0.148 H 267.3°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#5171CE
RGB	rgb(81, 113, 206)
HSL	hsl(225, 56%, 56%)
HSV	hsv(225, 61%, 81%)
CMYK	cmyk(60.7%, 45.1%, 0%, 19.2%)
CIE-LAB	lab(49.51, 17.15, -51.72)
CIE-LCH	lch(49.51, 54.49, 288.35°)
OKLab	oklab(57.09% -0.0069 -0.1476)
OKLCH	oklch(57.09% 0.148 267.3)
XYZ	xyz(20.4353, 18.0141, 60.7807)
Luminance	0.1802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171CE #CEAE51

analogous

#51B0CE #5171CE #7051CE

triadic

#5171CE #CE5171 #71CE51

tetradic

#5171CE #CE51B0 #CEAE51 #51CE70

square

#5171CE #CE51B0 #CEAE51 #51CE70

split-complementary

#5171CE #CE7051 #B0CE51

monochromatic

#243C80 #3252B0 #5171CE #8198DB #B1BFE9

Accessibility & contrast

On white

4.56

#5171CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#5171CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171CE

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171CE	#FFFFFF	#000000	##000000
##5171CE	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#457CD2

Deuteranopia (green-blind)

#3270CC

Tritanopia (blue-blind)

#008695

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #5171ce;
/* rgb */ color: rgb(81, 113, 206);
/* oklch */ color: oklch(57.1% 0.148 267.3);

Tailwind

colors: {
  custom: {
    50: '#8d99dd',
    500: '#5171ce',
    950: '#000000',
  },
}

SCSS

$custom: #5171ce;
$custom-light: #8d99dd;
$custom-dark: #000000;

JSON

{
  "hex": "#5171ce",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 206
  },
  "hsl": {
    "h": 224.64,
    "s": 56.054,
    "l": 56.275
  },
  "oklch": {
    "l": 0.57086,
    "c": 0.14776,
    "h": 267.3
  },
  "luminance": 0.18016
}

Semantic roles & 50–950 ramp

primary

#5171CE

secondary

#D7CAA4

accent

#B948DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #5171CE

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

Preview Lab → · Contrast checker → · Palette generator →