#405CB5#405CB5

#405CB5 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.1% C 0.145 H 267.8°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#405CB5
RGB	rgb(64, 92, 181)
HSL	hsl(226, 48%, 48%)
HSV	hsv(226, 65%, 71%)
CMYK	cmyk(64.6%, 49.2%, 0%, 29%)
CIE-LAB	lab(41.34, 18.64, -50.43)
CIE-LCH	lch(41.34, 53.76, 290.29°)
OKLab	oklab(50.11% -0.0056 -0.1444)
OKLCH	oklch(50.11% 0.145 267.8)
XYZ	xyz(14.2791, 12.0792, 45.2861)
Luminance	0.1208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405CB5 #B59940

analogous

#4096B5 #405CB5 #5E40B5

triadic

#405CB5 #B5405C #5CB540

tetradic

#405CB5 #B54096 #B59940 #40B55E

square

#405CB5 #B54096 #B59940 #40B55E

split-complementary

#405CB5 #B55E40 #96B540

monochromatic

#202E5B #304588 #405CB5 #6880CA #96A6DA

Accessibility & contrast

On white

6.15

#405CB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#405CB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405CB5

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405CB5	#FFFFFF	#000000	##FFFFFF
##405CB5	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D67B8

Deuteranopia (green-blind)

#115DB3

Tritanopia (blue-blind)

#007180

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #405cb5;
/* rgb */ color: rgb(64, 92, 181);
/* oklch */ color: oklch(50.1% 0.145 267.8);

Tailwind

colors: {
  custom: {
    50: '#8189cc',
    500: '#405cb5',
    950: '#000000',
  },
}

SCSS

$custom: #405cb5;
$custom-light: #8189cc;
$custom-dark: #000000;

JSON

{
  "hex": "#405cb5",
  "rgb": {
    "r": 64,
    "g": 92,
    "b": 181
  },
  "hsl": {
    "h": 225.641,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.50107,
    "c": 0.14453,
    "h": 267.8
  },
  "luminance": 0.1208
}

Semantic roles & 50–950 ramp

primary

#405CB5

secondary

#C5B78B

accent

#B750D7

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405CB5

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

Preview Lab → · Contrast checker → · Palette generator →