#405BB9#405BB9

#405BB9 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.2% C 0.151 H 268.4°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#405BB9
RGB	rgb(64, 91, 185)
HSL	hsl(227, 49%, 49%)
HSV	hsv(227, 65%, 73%)
CMYK	cmyk(65.4%, 50.8%, 0%, 27.5%)
CIE-LAB	lab(41.33, 20.71, -52.78)
CIE-LCH	lch(41.33, 56.70, 291.42°)
OKLab	oklab(50.19% -0.0041 -0.1514)
OKLCH	oklch(50.19% 0.151 268.4)
XYZ	xyz(14.6094, 12.0736, 47.4501)
Luminance	0.1207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405BB9 #B99E40

analogous

#4098B9 #405BB9 #6240B9

triadic

#405BB9 #B9405B #5BB940

tetradic

#405BB9 #B94098 #B99E40 #40B962

square

#405BB9 #B94098 #B99E40 #40B962

split-complementary

#405BB9 #B96240 #98B940

monochromatic

#212E5E #30458C #405BB9 #6B80CC #98A7DB

Accessibility & contrast

On white

6.15

#405BB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#405BB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405BB9

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405BB9	#FFFFFF	#000000	##FFFFFF
##405BB9	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)

#2567BC

Deuteranopia (green-blind)

#005CB7

Tritanopia (blue-blind)

#007181

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #405bb9;
/* rgb */ color: rgb(64, 91, 185);
/* oklch */ color: oklch(50.2% 0.151 268.4);

Tailwind

colors: {
  custom: {
    50: '#8289cf',
    500: '#405bb9',
    950: '#000000',
  },
}

SCSS

$custom: #405bb9;
$custom-light: #8289cf;
$custom-dark: #000000;

JSON

{
  "hex": "#405bb9",
  "rgb": {
    "r": 64,
    "g": 91,
    "b": 185
  },
  "hsl": {
    "h": 226.612,
    "s": 48.594,
    "l": 48.824
  },
  "oklch": {
    "l": 0.50185,
    "c": 0.15142,
    "h": 268.4
  },
  "luminance": 0.12075
}

Semantic roles & 50–950 ramp

primary

#405BB9

secondary

#C7BA8E

accent

#BA50D8

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #405BB9

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

Preview Lab → · Contrast checker → · Palette generator →