#405FB9#405FB9

#405FB9 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.0% C 0.146 H 266.9°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#405FB9
RGB	rgb(64, 95, 185)
HSL	hsl(225, 49%, 49%)
HSV	hsv(225, 65%, 73%)
CMYK	cmyk(65.4%, 48.6%, 0%, 27.5%)
CIE-LAB	lab(42.42, 18.14, -51.03)
CIE-LCH	lch(42.42, 54.15, 289.57°)
OKLab	oklab(51.01% -0.008 -0.1461)
OKLCH	oklch(51.01% 0.146 266.9)
XYZ	xyz(14.9605, 12.7758, 47.5671)
Luminance	0.1278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405FB9 #B99A40

analogous

#409CB9 #405FB9 #5E40B9

triadic

#405FB9 #B9405F #5FB940

tetradic

#405FB9 #B9409C #B99A40 #40B95E

square

#405FB9 #B9409C #B99A40 #40B95E

split-complementary

#405FB9 #B95E40 #9CB940

monochromatic

#21305E #30488C #405FB9 #6B83CC #98A9DB

Accessibility & contrast

On white

5.91

#405FB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#405FB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405FB9

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405FB9	#FFFFFF	#000000	##FFFFFF
##405FB9	1.00	5.91	3.56	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F6ABC

Deuteranopia (green-blind)

#135FB7

Tritanopia (blue-blind)

#007483

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #405fb9;
/* rgb */ color: rgb(64, 95, 185);
/* oklch */ color: oklch(51.0% 0.146 266.9);

Tailwind

colors: {
  custom: {
    50: '#818ccf',
    500: '#405fb9',
    950: '#000000',
  },
}

SCSS

$custom: #405fb9;
$custom-light: #818ccf;
$custom-dark: #000000;

JSON

{
  "hex": "#405fb9",
  "rgb": {
    "r": 64,
    "g": 95,
    "b": 185
  },
  "hsl": {
    "h": 224.628,
    "s": 48.594,
    "l": 48.824
  },
  "oklch": {
    "l": 0.51014,
    "c": 0.14636,
    "h": 266.9
  },
  "luminance": 0.12777
}

Semantic roles & 50–950 ramp

primary

#405FB9

secondary

#C7B88E

accent

#B550D8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #405FB9

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

Preview Lab → · Contrast checker → · Palette generator →