#405EB5#405EB5

#405EB5 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.5% C 0.142 H 267.0°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#405EB5
RGB	rgb(64, 94, 181)
HSL	hsl(225, 48%, 48%)
HSV	hsv(225, 65%, 71%)
CMYK	cmyk(64.6%, 48.1%, 0%, 29%)
CIE-LAB	lab(41.89, 17.35, -49.54)
CIE-LCH	lch(41.89, 52.49, 289.30°)
OKLab	oklab(50.53% -0.0075 -0.1418)
OKLCH	oklch(50.53% 0.142 267)
XYZ	xyz(14.4547, 12.4303, 45.3446)
Luminance	0.1243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405EB5 #B59740

analogous

#4099B5 #405EB5 #5C40B5

triadic

#405EB5 #B5405E #5EB540

tetradic

#405EB5 #B54099 #B59740 #40B55C

square

#405EB5 #B54099 #B59740 #40B55C

split-complementary

#405EB5 #B55C40 #99B540

monochromatic

#202F5B #304788 #405EB5 #6881CA #96A7DA

Accessibility & contrast

On white

6.02

#405EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#405EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405EB5

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405EB5	#FFFFFF	#000000	##FFFFFF
##405EB5	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)

#3168B8

Deuteranopia (green-blind)

#195EB3

Tritanopia (blue-blind)

#007281

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405eb5;
/* rgb */ color: rgb(64, 94, 181);
/* oklch */ color: oklch(50.5% 0.142 267.0);

Tailwind

colors: {
  custom: {
    50: '#818bcc',
    500: '#405eb5',
    950: '#000000',
  },
}

SCSS

$custom: #405eb5;
$custom-light: #818bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#405eb5",
  "rgb": {
    "r": 64,
    "g": 94,
    "b": 181
  },
  "hsl": {
    "h": 224.615,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.50527,
    "c": 0.14199,
    "h": 267
  },
  "luminance": 0.12432
}

Semantic roles & 50–950 ramp

primary

#405EB5

secondary

#C5B78B

accent

#B550D7

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405EB5

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

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