#405FB3#405FB3

#405FB3 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.6% C 0.138 H 266.3°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#405FB3
RGB	rgb(64, 95, 179)
HSL	hsl(224, 47%, 48%)
HSV	hsv(224, 64%, 70%)
CMYK	cmyk(64.2%, 46.9%, 0%, 29.8%)
CIE-LAB	lab(42.04, 16.00, -48.13)
CIE-LCH	lch(42.04, 50.72, 288.39°)
OKLab	oklab(50.6% -0.0088 -0.1376)
OKLCH	oklch(50.6% 0.138 266.3)
XYZ	xyz(14.3404, 12.5278, 44.3015)
Luminance	0.1253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405FB3 #B39440

analogous

#4098B3 #405FB3 #5A40B3

triadic

#405FB3 #B3405F #5FB340

tetradic

#405FB3 #B34098 #B39440 #40B35A

square

#405FB3 #B34098 #B39440 #40B35A

split-complementary

#405FB3 #B35A40 #98B340

monochromatic

#202F59 #304786 #405FB3 #6782C9 #94A7D9

Accessibility & contrast

On white

5.99

#405FB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#405FB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405FB3

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405FB3	#FFFFFF	#000000	##FFFFFF
##405FB3	1.00	5.99	3.51	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3569B6

Deuteranopia (green-blind)

#205EB1

Tritanopia (blue-blind)

#007280

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405fb3;
/* rgb */ color: rgb(64, 95, 179);
/* oklch */ color: oklch(50.6% 0.138 266.3);

Tailwind

colors: {
  custom: {
    50: '#808cca',
    500: '#405fb3',
    950: '#000000',
  },
}

SCSS

$custom: #405fb3;
$custom-light: #808cca;
$custom-dark: #000000;

JSON

{
  "hex": "#405fb3",
  "rgb": {
    "r": 64,
    "g": 95,
    "b": 179
  },
  "hsl": {
    "h": 223.826,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.50601,
    "c": 0.13789,
    "h": 266.3
  },
  "luminance": 0.12529
}

Semantic roles & 50–950 ramp

primary

#405FB3

secondary

#C4B58A

accent

#B351D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #405FB3

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

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