#405FB1#405FB1

#405FB1 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.5% C 0.135 H 266.1°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#405FB1
RGB	rgb(64, 95, 177)
HSL	hsl(224, 47%, 47%)
HSV	hsv(224, 64%, 69%)
CMYK	cmyk(63.8%, 46.3%, 0%, 30.6%)
CIE-LAB	lab(41.92, 15.28, -47.15)
CIE-LCH	lch(41.92, 49.57, 287.96°)
OKLab	oklab(50.47% -0.0091 -0.1347)
OKLCH	oklch(50.47% 0.135 266.1)
XYZ	xyz(14.1396, 12.4475, 43.2439)
Luminance	0.1245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405FB1 #B19240

analogous

#4098B1 #405FB1 #5A40B1

triadic

#405FB1 #B1405F #5FB140

tetradic

#405FB1 #B14098 #B19240 #40B15A

square

#405FB1 #B14098 #B19240 #40B15A

split-complementary

#405FB1 #B15A40 #98B140

monochromatic

#1F2F57 #304784 #405FB1 #6681C8 #93A6D8

Accessibility & contrast

On white

6.02

#405FB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#405FB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405FB1

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405FB1	#FFFFFF	#000000	##FFFFFF
##405FB1	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3768B4

Deuteranopia (green-blind)

#235EAF

Tritanopia (blue-blind)

#00727F

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405fb1;
/* rgb */ color: rgb(64, 95, 177);
/* oklch */ color: oklch(50.5% 0.135 266.1);

Tailwind

colors: {
  custom: {
    50: '#808cc9',
    500: '#405fb1',
    950: '#000000',
  },
}

SCSS

$custom: #405fb1;
$custom-light: #808cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#405fb1",
  "rgb": {
    "r": 64,
    "g": 95,
    "b": 177
  },
  "hsl": {
    "h": 223.54,
    "s": 46.888,
    "l": 47.255
  },
  "oklch": {
    "l": 0.50466,
    "c": 0.13506,
    "h": 266.1
  },
  "luminance": 0.12449
}

Semantic roles & 50–950 ramp

primary

#405FB1

secondary

#C3B489

accent

#B251D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #405FB1

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

Preview Lab → · Contrast checker → · Palette generator →