#405DB3#405DB3

#405DB3 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.2% C 0.140 H 267.2°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#405DB3
RGB	rgb(64, 93, 179)
HSL	hsl(225, 47%, 48%)
HSV	hsv(225, 64%, 70%)
CMYK	cmyk(64.2%, 48%, 0%, 29.8%)
CIE-LAB	lab(41.49, 17.28, -49.02)
CIE-LCH	lch(41.49, 51.97, 289.42°)
OKLab	oklab(50.18% -0.0068 -0.1403)
OKLCH	oklch(50.18% 0.14 267.2)
XYZ	xyz(14.1626, 12.1721, 44.2422)
Luminance	0.1217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405DB3 #B39640

analogous

#4096B3 #405DB3 #5D40B3

triadic

#405DB3 #B3405D #5DB340

tetradic

#405DB3 #B34096 #B39640 #40B35D

square

#405DB3 #B34096 #B39640 #40B35D

split-complementary

#405DB3 #B35D40 #96B340

monochromatic

#202E59 #304686 #405DB3 #6780C9 #94A6D9

Accessibility & contrast

On white

6.11

#405DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#405DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405DB3

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405DB3	#FFFFFF	#000000	##FFFFFF
##405DB3	1.00	6.11	3.43	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3167B6

Deuteranopia (green-blind)

#1A5DB1

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #405db3;
/* rgb */ color: rgb(64, 93, 179);
/* oklch */ color: oklch(50.2% 0.140 267.2);

Tailwind

colors: {
  custom: {
    50: '#808aca',
    500: '#405db3',
    950: '#000000',
  },
}

SCSS

$custom: #405db3;
$custom-light: #808aca;
$custom-dark: #000000;

JSON

{
  "hex": "#405db3",
  "rgb": {
    "r": 64,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 224.87,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.50178,
    "c": 0.14043,
    "h": 267.2
  },
  "luminance": 0.12173
}

Semantic roles & 50–950 ramp

primary

#405DB3

secondary

#C4B68A

accent

#B551D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405DB3

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

Preview Lab → · Contrast checker → · Palette generator →