#5171EB#5171EB

#5171EB is a mid, vivid blue. Relative luminance 0.196; OKLCH L 59.1% C 0.187 H 268.9°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#5171EB
RGB	rgb(81, 113, 235)
HSL	hsl(228, 79%, 62%)
HSV	hsv(228, 66%, 92%)
CMYK	cmyk(65.5%, 51.9%, 0%, 7.8%)
CIE-LAB	lab(51.33, 27.07, -65.19)
CIE-LCH	lch(51.33, 70.59, 292.55°)
OKLab	oklab(59.05% -0.0035 -0.1872)
OKLCH	oklch(59.05% 0.187 268.9)
XYZ	xyz(24.2887, 19.5555, 81.0757)
Luminance	0.1956 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171EB #EBCB51

analogous

#51BEEB #5171EB #7E51EB

triadic

#5171EB #EB5171 #71EB51

tetradic

#5171EB #EB51BE #EBCB51 #51EB7E

square

#5171EB #EB51BE #EBCB51 #51EB7E

split-complementary

#5171EB #EB7E51 #BEEB51

monochromatic

#1434AE #1A44E5 #5171EB #889EF1 #BFCBF8

Accessibility & contrast

On white

4.28

#5171EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#5171EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5171EB

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171EB	#FFFFFF	#000000	##000000
##5171EB	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2282EF

Deuteranopia (green-blind)

#0074E9

Tritanopia (blue-blind)

#008EA3

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #5171eb;
/* rgb */ color: rgb(81, 113, 235);
/* oklch */ color: oklch(59.1% 0.187 268.9);

Tailwind

colors: {
  custom: {
    50: '#9199f2',
    500: '#5171eb',
    950: '#000000',
  },
}

SCSS

$custom: #5171eb;
$custom-light: #9199f2;
$custom-dark: #000000;

JSON

{
  "hex": "#5171eb",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 235
  },
  "hsl": {
    "h": 227.532,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.5905,
    "c": 0.18724,
    "h": 268.9
  },
  "luminance": 0.19558
}

Semantic roles & 50–950 ramp

primary

#5171EB

secondary

#E8DCB0

accent

#B00ADC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D17

muted

#7E7E85

Preview Lab

Preview with #5171EB

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

Preview Lab → · Contrast checker → · Palette generator →