#5370BC#5370BC

#5370BC is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.123 H 266.7°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#5370BC
RGB	rgb(83, 112, 188)
HSL	hsl(223, 44%, 53%)
HSV	hsv(223, 56%, 74%)
CMYK	cmyk(55.9%, 40.4%, 0%, 26.3%)
CIE-LAB	lab(48.33, 12.14, -43.27)
CIE-LCH	lch(48.33, 44.94, 285.67°)
OKLab	oklab(55.88% -0.0071 -0.1228)
OKLCH	oklch(55.88% 0.123 266.7)
XYZ	xyz(18.4355, 17.0568, 49.8880)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5370BC #BC9F53

analogous

#53A4BC #5370BC #6A53BC

triadic

#5370BC #BC5370 #70BC53

tetradic

#5370BC #BC53A4 #BC9F53 #53BC6A

square

#5370BC #BC53A4 #BC9F53 #53BC6A

split-complementary

#5370BC #BC6A53 #A4BC53

monochromatic

#2A3C6B #3B5497 #5370BC #7F95CD #ABB9DE

Accessibility & contrast

On white

4.76

#5370BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#5370BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5370BC

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5370BC	#FFFFFF	#000000	##FFFFFF
##5370BC	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5078BF

Deuteranopia (green-blind)

#436EBA

Tritanopia (blue-blind)

#12818D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5370bc;
/* rgb */ color: rgb(83, 112, 188);
/* oklch */ color: oklch(55.9% 0.123 266.7);

Tailwind

colors: {
  custom: {
    50: '#8b98d0',
    500: '#5370bc',
    950: '#000000',
  },
}

SCSS

$custom: #5370bc;
$custom-light: #8b98d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5370bc",
  "rgb": {
    "r": 83,
    "g": 112,
    "b": 188
  },
  "hsl": {
    "h": 223.429,
    "s": 43.933,
    "l": 53.137
  },
  "oklch": {
    "l": 0.55877,
    "c": 0.12297,
    "h": 266.7
  },
  "luminance": 0.17058
}

Semantic roles & 50–950 ramp

primary

#5370BC

secondary

#CCC09F

accent

#B054D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #5370BC

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

Preview Lab → · Contrast checker → · Palette generator →