#405FB8#405FB8

#405FB8 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 50.9% C 0.145 H 266.8°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#405FB8
RGB	rgb(64, 95, 184)
HSL	hsl(225, 48%, 49%)
HSV	hsv(225, 65%, 72%)
CMYK	cmyk(65.2%, 48.4%, 0%, 27.8%)
CIE-LAB	lab(42.36, 17.78, -50.55)
CIE-LCH	lch(42.36, 53.58, 289.38°)
OKLab	oklab(50.94% -0.0081 -0.1447)
OKLCH	oklch(50.94% 0.145 266.8)
XYZ	xyz(14.8553, 12.7337, 47.0131)
Luminance	0.1273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405FB8 #B89940

analogous

#409BB8 #405FB8 #5D40B8

triadic

#405FB8 #B8405F #5FB840

tetradic

#405FB8 #B8409B #B89940 #40B85D

square

#405FB8 #B8409B #B89940 #40B85D

split-complementary

#405FB8 #B85D40 #9BB840

monochromatic

#20305D #30488B #405FB8 #6A83CB #97A9DB

Accessibility & contrast

On white

5.92

#405FB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#405FB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405FB8

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405FB8	#FFFFFF	#000000	##FFFFFF
##405FB8	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306ABB

Deuteranopia (green-blind)

#165FB6

Tritanopia (blue-blind)

#007482

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #405fb8;
/* rgb */ color: rgb(64, 95, 184);
/* oklch */ color: oklch(50.9% 0.145 266.8);

Tailwind

colors: {
  custom: {
    50: '#818cce',
    500: '#405fb8',
    950: '#000000',
  },
}

SCSS

$custom: #405fb8;
$custom-light: #818cce;
$custom-dark: #000000;

JSON

{
  "hex": "#405fb8",
  "rgb": {
    "r": 64,
    "g": 95,
    "b": 184
  },
  "hsl": {
    "h": 224.5,
    "s": 48.387,
    "l": 48.627
  },
  "oklch": {
    "l": 0.50945,
    "c": 0.14495,
    "h": 266.8
  },
  "luminance": 0.12735
}

Semantic roles & 50–950 ramp

primary

#405FB8

secondary

#C7B88D

accent

#B550D8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #405FB8

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

Preview Lab → · Contrast checker → · Palette generator →