#405DB4#405DB4

#405DB4 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.2% C 0.142 H 267.3°. Best body text is #FFFFFF at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#405DB4
RGB	rgb(64, 93, 180)
HSL	hsl(225, 48%, 48%)
HSV	hsv(225, 64%, 71%)
CMYK	cmyk(64.4%, 48.3%, 0%, 29.4%)
CIE-LAB	lab(41.55, 17.64, -49.50)
CIE-LCH	lch(41.55, 52.55, 289.61°)
OKLab	oklab(50.25% -0.0067 -0.1417)
OKLCH	oklch(50.25% 0.142 267.3)
XYZ	xyz(14.2641, 12.2127, 44.7767)
Luminance	0.1221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405DB4 #B49740

analogous

#4097B4 #405DB4 #5D40B4

triadic

#405DB4 #B4405D #5DB440

tetradic

#405DB4 #B44097 #B49740 #40B45D

square

#405DB4 #B44097 #B49740 #40B45D

split-complementary

#405DB4 #B45D40 #97B440

monochromatic

#202E5A #304687 #405DB4 #6880C9 #95A6D9

Accessibility & contrast

On white

6.10

#405DB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#405DB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405DB4

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405DB4	#FFFFFF	#000000	##FFFFFF
##405DB4	1.00	6.10	3.44	6.10
#FFFFFF	6.10	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3068B7

Deuteranopia (green-blind)

#185DB2

Tritanopia (blue-blind)

#007180

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #405db4;
/* rgb */ color: rgb(64, 93, 180);
/* oklch */ color: oklch(50.2% 0.142 267.3);

Tailwind

colors: {
  custom: {
    50: '#818acb',
    500: '#405db4',
    950: '#000000',
  },
}

SCSS

$custom: #405db4;
$custom-light: #818acb;
$custom-dark: #000000;

JSON

{
  "hex": "#405db4",
  "rgb": {
    "r": 64,
    "g": 93,
    "b": 180
  },
  "hsl": {
    "h": 225,
    "s": 47.541,
    "l": 47.843
  },
  "oklch": {
    "l": 0.50247,
    "c": 0.14184,
    "h": 267.3
  },
  "luminance": 0.12214
}

Semantic roles & 50–950 ramp

primary

#405DB4

secondary

#C5B68B

accent

#B651D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405DB4

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

Preview Lab → · Contrast checker → · Palette generator →