#5371EF#5371EF

#5371EF is a mid, vivid blue. Relative luminance 0.199; OKLCH L 59.4% C 0.192 H 269.6°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#5371EF
RGB	rgb(83, 113, 239)
HSL	hsl(228, 83%, 63%)
HSV	hsv(228, 65%, 94%)
CMYK	cmyk(65.3%, 52.7%, 0%, 6.3%)
CIE-LAB	lab(51.70, 28.75, -66.82)
CIE-LCH	lch(51.70, 72.75, 293.28°)
OKLab	oklab(59.44% -0.0013 -0.192)
OKLCH	oklch(59.44% 0.192 269.6)
XYZ	xyz(25.0471, 19.8789, 84.1617)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5371EF #EFD153

analogous

#53BFEF #5371EF #8353EF

triadic

#5371EF #EF5371 #71EF53

tetradic

#5371EF #EF53BF #EFD153 #53EF83

square

#5371EF #EF53BF #EFD153 #53EF83

split-complementary

#5371EF #EF8353 #BFEF53

monochromatic

#1131B7 #1B43EA #5371EF #8B9FF4 #C3CDF9

Accessibility & contrast

On white

4.22

#5371EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#5371EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5371EF

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5371EF	#FFFFFF	#000000	##000000
##5371EF	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A83F3

Deuteranopia (green-blind)

#0074EC

Tritanopia (blue-blind)

#008FA5

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #5371ef;
/* rgb */ color: rgb(83, 113, 239);
/* oklch */ color: oklch(59.4% 0.192 269.6);

Tailwind

colors: {
  custom: {
    50: '#9399f5',
    500: '#5371ef',
    950: '#000000',
  },
}

SCSS

$custom: #5371ef;
$custom-light: #9399f5;
$custom-dark: #000000;

JSON

{
  "hex": "#5371ef",
  "rgb": {
    "r": 83,
    "g": 113,
    "b": 239
  },
  "hsl": {
    "h": 228.462,
    "s": 82.979,
    "l": 63.137
  },
  "oklch": {
    "l": 0.59441,
    "c": 0.19198,
    "h": 269.6
  },
  "luminance": 0.19881
}

Semantic roles & 50–950 ramp

primary

#5371EF

secondary

#EBE0B3

accent

#B606DF

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0D17

muted

#7E7E85

Preview Lab

Preview with #5371EF

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

Preview Lab → · Contrast checker → · Palette generator →