#5370B1#5370B1

#5370B1 is a mid, moderate blue. Relative luminance 0.166; OKLCH L 55.2% C 0.107 H 264.9°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#5370B1
RGB	rgb(83, 112, 177)
HSL	hsl(221, 38%, 51%)
HSV	hsv(221, 53%, 69%)
CMYK	cmyk(53.1%, 36.7%, 0%, 30.6%)
CIE-LAB	lab(47.75, 8.54, -37.81)
CIE-LCH	lch(47.75, 38.76, 282.72°)
OKLab	oklab(55.24% -0.0095 -0.1068)
OKLCH	oklch(55.24% 0.107 264.9)
XYZ	xyz(17.2946, 16.6004, 43.8793)
Luminance	0.1660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5370B1 #B19453

analogous

#539FB1 #5370B1 #6553B1

triadic

#5370B1 #B15370 #70B153

tetradic

#5370B1 #B1539F #B19453 #53B165

square

#5370B1 #B1539F #B19453 #53B165

split-complementary

#5370B1 #B16553 #9FB153

monochromatic

#2B3B5F #3E5589 #5370B1 #7D93C4 #A7B6D7

Accessibility & contrast

On white

4.86

#5370B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#5370B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5370B1

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5370B1	#FFFFFF	#000000	##FFFFFF
##5370B1	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5676B4

Deuteranopia (green-blind)

#4B6DB0

Tritanopia (blue-blind)

#247E88

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #5370b1;
/* rgb */ color: rgb(83, 112, 177);
/* oklch */ color: oklch(55.2% 0.107 264.9);

Tailwind

colors: {
  custom: {
    50: '#8998c8',
    500: '#5370b1',
    950: '#000000',
  },
}

SCSS

$custom: #5370b1;
$custom-light: #8998c8;
$custom-dark: #000000;

JSON

{
  "hex": "#5370b1",
  "rgb": {
    "r": 83,
    "g": 112,
    "b": 177
  },
  "hsl": {
    "h": 221.489,
    "s": 37.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.55241,
    "c": 0.10725,
    "h": 264.9
  },
  "luminance": 0.16602
}

Semantic roles & 50–950 ramp

primary

#5370B1

secondary

#C5B89B

accent

#AA5ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #5370B1

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

Preview Lab → · Contrast checker → · Palette generator →