#405DB7#405DB7

#405DB7 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.5% C 0.146 H 267.5°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#405DB7
RGB	rgb(64, 93, 183)
HSL	hsl(225, 48%, 48%)
HSV	hsv(225, 65%, 72%)
CMYK	cmyk(65%, 49.2%, 0%, 28.2%)
CIE-LAB	lab(41.75, 18.71, -50.95)
CIE-LCH	lch(41.75, 54.27, 290.16°)
OKLab	oklab(50.46% -0.0063 -0.1459)
OKLCH	oklch(50.46% 0.146 267.5)
XYZ	xyz(14.5730, 12.3363, 46.4037)
Luminance	0.1234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405DB7 #B79A40

analogous

#4098B7 #405DB7 #5E40B7

triadic

#405DB7 #B7405D #5DB740

tetradic

#405DB7 #B74098 #B79A40 #40B75E

square

#405DB7 #B74098 #B79A40 #40B75E

split-complementary

#405DB7 #B75E40 #98B740

monochromatic

#202F5C #30468A #405DB7 #6981CB #97A7DB

Accessibility & contrast

On white

6.06

#405DB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#405DB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405DB7

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405DB7	#FFFFFF	#000000	##FFFFFF
##405DB7	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D68BA

Deuteranopia (green-blind)

#105DB5

Tritanopia (blue-blind)

#007281

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #405db7;
/* rgb */ color: rgb(64, 93, 183);
/* oklch */ color: oklch(50.5% 0.146 267.5);

Tailwind

colors: {
  custom: {
    50: '#818acd',
    500: '#405db7',
    950: '#000000',
  },
}

SCSS

$custom: #405db7;
$custom-light: #818acd;
$custom-dark: #000000;

JSON

{
  "hex": "#405db7",
  "rgb": {
    "r": 64,
    "g": 93,
    "b": 183
  },
  "hsl": {
    "h": 225.378,
    "s": 48.178,
    "l": 48.431
  },
  "oklch": {
    "l": 0.50456,
    "c": 0.14608,
    "h": 267.5
  },
  "luminance": 0.12338
}

Semantic roles & 50–950 ramp

primary

#405DB7

secondary

#C6B88D

accent

#B750D8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405DB7

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

Preview Lab → · Contrast checker → · Palette generator →