#405FB5#405FB5

#405FB5 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 50.7% C 0.141 H 266.5°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#405FB5
RGB	rgb(64, 95, 181)
HSL	hsl(224, 48%, 48%)
HSV	hsv(224, 65%, 71%)
CMYK	cmyk(64.6%, 47.5%, 0%, 29%)
CIE-LAB	lab(42.17, 16.71, -49.10)
CIE-LCH	lch(42.17, 51.86, 288.80°)
OKLab	oklab(50.74% -0.0085 -0.1405)
OKLCH	oklch(50.74% 0.141 266.5)
XYZ	xyz(14.5442, 12.6093, 45.3745)
Luminance	0.1261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405FB5 #B59640

analogous

#4099B5 #405FB5 #5C40B5

triadic

#405FB5 #B5405F #5FB540

tetradic

#405FB5 #B54099 #B59640 #40B55C

square

#405FB5 #B54099 #B59640 #40B55C

split-complementary

#405FB5 #B55C40 #99B540

monochromatic

#20305B #304788 #405FB5 #6882CA #96A8DA

Accessibility & contrast

On white

5.96

#405FB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#405FB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405FB5

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405FB5	#FFFFFF	#000000	##FFFFFF
##405FB5	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3369B8

Deuteranopia (green-blind)

#1D5FB3

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #405fb5;
/* rgb */ color: rgb(64, 95, 181);
/* oklch */ color: oklch(50.7% 0.141 266.5);

Tailwind

colors: {
  custom: {
    50: '#818ccc',
    500: '#405fb5',
    950: '#000000',
  },
}

SCSS

$custom: #405fb5;
$custom-light: #818ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#405fb5",
  "rgb": {
    "r": 64,
    "g": 95,
    "b": 181
  },
  "hsl": {
    "h": 224.103,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.50738,
    "c": 0.14073,
    "h": 266.5
  },
  "luminance": 0.12611
}

Semantic roles & 50–950 ramp

primary

#405FB5

secondary

#C5B68B

accent

#B450D7

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #405FB5

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

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