#405EB3#405EB3

#405EB3 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.4% C 0.139 H 266.8°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#405EB3
RGB	rgb(64, 94, 179)
HSL	hsl(224, 47%, 48%)
HSV	hsv(224, 64%, 70%)
CMYK	cmyk(64.2%, 47.5%, 0%, 29.8%)
CIE-LAB	lab(41.77, 16.64, -48.57)
CIE-LCH	lch(41.77, 51.34, 288.91°)
OKLab	oklab(50.39% -0.0078 -0.1389)
OKLCH	oklch(50.39% 0.139 266.8)
XYZ	xyz(14.2509, 12.3488, 44.2716)
Luminance	0.1235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405EB3 #B39540

analogous

#4097B3 #405EB3 #5C40B3

triadic

#405EB3 #B3405E #5EB340

tetradic

#405EB3 #B34097 #B39540 #40B35C

square

#405EB3 #B34097 #B39540 #40B35C

split-complementary

#405EB3 #B35C40 #97B340

monochromatic

#202F59 #304686 #405EB3 #6781C9 #94A6D9

Accessibility & contrast

On white

6.05

#405EB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#405EB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405EB3

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405EB3	#FFFFFF	#000000	##FFFFFF
##405EB3	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3368B6

Deuteranopia (green-blind)

#1D5EB1

Tritanopia (blue-blind)

#007280

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405eb3;
/* rgb */ color: rgb(64, 94, 179);
/* oklch */ color: oklch(50.4% 0.139 266.8);

Tailwind

colors: {
  custom: {
    50: '#808bca',
    500: '#405eb3',
    950: '#000000',
  },
}

SCSS

$custom: #405eb3;
$custom-light: #808bca;
$custom-dark: #000000;

JSON

{
  "hex": "#405eb3",
  "rgb": {
    "r": 64,
    "g": 94,
    "b": 179
  },
  "hsl": {
    "h": 224.348,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.50389,
    "c": 0.13916,
    "h": 266.8
  },
  "luminance": 0.1235
}

Semantic roles & 50–950 ramp

primary

#405EB3

secondary

#C4B58A

accent

#B451D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405EB3

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

Preview Lab → · Contrast checker → · Palette generator →