#405DB9#405DB9

#405DB9 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.6% C 0.149 H 267.7°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#405DB9
RGB	rgb(64, 93, 185)
HSL	hsl(226, 49%, 49%)
HSV	hsv(226, 65%, 73%)
CMYK	cmyk(65.4%, 49.7%, 0%, 27.5%)
CIE-LAB	lab(41.88, 19.42, -51.91)
CIE-LCH	lch(41.88, 55.42, 290.52°)
OKLab	oklab(50.6% -0.0061 -0.1488)
OKLCH	oklch(50.6% 0.149 267.7)
XYZ	xyz(14.7827, 12.4201, 47.5078)
Luminance	0.1242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405DB9 #B99C40

analogous

#409AB9 #405DB9 #6040B9

triadic

#405DB9 #B9405D #5DB940

tetradic

#405DB9 #B9409A #B99C40 #40B960

square

#405DB9 #B9409A #B99C40 #40B960

split-complementary

#405DB9 #B96040 #9AB940

monochromatic

#212F5E #30468C #405DB9 #6B82CC #98A8DB

Accessibility & contrast

On white

6.03

#405DB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#405DB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405DB9

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405DB9	#FFFFFF	#000000	##FFFFFF
##405DB9	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A69BC

Deuteranopia (green-blind)

#085EB7

Tritanopia (blue-blind)

#007282

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405db9;
/* rgb */ color: rgb(64, 93, 185);
/* oklch */ color: oklch(50.6% 0.149 267.7);

Tailwind

colors: {
  custom: {
    50: '#818acf',
    500: '#405db9',
    950: '#000000',
  },
}

SCSS

$custom: #405db9;
$custom-light: #818acf;
$custom-dark: #000000;

JSON

{
  "hex": "#405db9",
  "rgb": {
    "r": 64,
    "g": 93,
    "b": 185
  },
  "hsl": {
    "h": 225.62,
    "s": 48.594,
    "l": 48.824
  },
  "oklch": {
    "l": 0.50597,
    "c": 0.14888,
    "h": 267.7
  },
  "luminance": 0.12421
}

Semantic roles & 50–950 ramp

primary

#405DB9

secondary

#C7B98E

accent

#B750D8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #405DB9

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

Preview Lab → · Contrast checker → · Palette generator →