#5371B1#5371B1

#5371B1 is a mid, moderate blue. Relative luminance 0.168; OKLCH L 55.5% C 0.106 H 264.2°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#5371B1
RGB	rgb(83, 113, 177)
HSL	hsl(221, 38%, 51%)
HSV	hsv(221, 53%, 69%)
CMYK	cmyk(53.1%, 36.2%, 0%, 30.6%)
CIE-LAB	lab(48.04, 7.92, -37.36)
CIE-LCH	lch(48.04, 38.19, 281.97°)
OKLab	oklab(55.46% -0.0107 -0.1055)
OKLCH	oklch(55.46% 0.106 264.2)
XYZ	xyz(17.4056, 16.8223, 43.9163)
Luminance	0.1682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5371B1 #B19353

analogous

#53A0B1 #5371B1 #6453B1

triadic

#5371B1 #B15371 #71B153

tetradic

#5371B1 #B153A0 #B19353 #53B164

square

#5371B1 #B153A0 #B19353 #53B164

split-complementary

#5371B1 #B16453 #A0B153

monochromatic

#2B3B5F #3E5689 #5371B1 #7D94C4 #A7B7D7

Accessibility & contrast

On white

4.81

#5371B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#5371B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5371B1

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5371B1	#FFFFFF	#000000	##FFFFFF
##5371B1	1.00	4.81	4.36	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5877B4

Deuteranopia (green-blind)

#4D6EB0

Tritanopia (blue-blind)

#247F89

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #5371b1;
/* rgb */ color: rgb(83, 113, 177);
/* oklch */ color: oklch(55.5% 0.106 264.2);

Tailwind

colors: {
  custom: {
    50: '#8999c8',
    500: '#5371b1',
    950: '#000000',
  },
}

SCSS

$custom: #5371b1;
$custom-light: #8999c8;
$custom-dark: #000000;

JSON

{
  "hex": "#5371b1",
  "rgb": {
    "r": 83,
    "g": 113,
    "b": 177
  },
  "hsl": {
    "h": 220.851,
    "s": 37.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.5546,
    "c": 0.10606,
    "h": 264.2
  },
  "luminance": 0.16824
}

Semantic roles & 50–950 ramp

primary

#5371B1

secondary

#C5B79B

accent

#A95ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #5371B1

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

Preview Lab → · Contrast checker → · Palette generator →