#5B73BB#5B73BB

#5B73BB is a mid, moderate blue. Relative luminance 0.181; OKLCH L 57.0% C 0.115 H 268.6°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#5B73BB
RGB	rgb(91, 115, 187)
HSL	hsl(225, 41%, 55%)
HSV	hsv(225, 51%, 73%)
CMYK	cmyk(51.3%, 38.5%, 0%, 26.7%)
CIE-LAB	lab(49.58, 11.76, -40.68)
CIE-LCH	lch(49.58, 42.34, 286.13°)
OKLab	oklab(56.95% -0.0027 -0.115)
OKLCH	oklch(56.95% 0.115 268.6)
XYZ	xyz(19.4118, 18.0722, 49.4695)
Luminance	0.1807 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B73BB #BBA35B

analogous

#5BA3BB #5B73BB #735BBB

triadic

#5B73BB #BB5B73 #73BB5B

tetradic

#5B73BB #BB5BA3 #BBA35B #5BBB73

square

#5B73BB #BB5BA3 #BBA35B #5BBB73

split-complementary

#5B73BB #BB735B #A3BB5B

monochromatic

#2E3E6E #405699 #5B73BB #8698CD #B2BDDF

Accessibility & contrast

On white

4.55

#5B73BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#5B73BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B73BB

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B73BB	#FFFFFF	#000000	##000000
##5B73BB	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577ABE

Deuteranopia (green-blind)

#4C72B9

Tritanopia (blue-blind)

#30828E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #5b73bb;
/* rgb */ color: rgb(91, 115, 187);
/* oklch */ color: oklch(57.0% 0.115 268.6);

Tailwind

colors: {
  custom: {
    50: '#8f9bd0',
    500: '#5b73bb',
    950: '#000000',
  },
}

SCSS

$custom: #5b73bb;
$custom-light: #8f9bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#5b73bb",
  "rgb": {
    "r": 91,
    "g": 115,
    "b": 187
  },
  "hsl": {
    "h": 225,
    "s": 41.379,
    "l": 54.51
  },
  "oklch": {
    "l": 0.56951,
    "c": 0.11504,
    "h": 268.6
  },
  "luminance": 0.18073
}

Semantic roles & 50–950 ramp

primary

#5B73BB

secondary

#CDC3A5

accent

#B357D1

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #5B73BB

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

Preview Lab → · Contrast checker → · Palette generator →