#404DB8#404DB8

#404DB8 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.3% C 0.168 H 273.0°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#404DB8
RGB	rgb(64, 77, 184)
HSL	hsl(234, 48%, 49%)
HSV	hsv(234, 65%, 72%)
CMYK	cmyk(65.2%, 58.2%, 0%, 27.8%)
CIE-LAB	lab(37.59, 29.37, -58.26)
CIE-LCH	lch(37.59, 65.25, 296.75°)
OKLab	oklab(47.35% 0.0087 -0.1677)
OKLCH	oklch(47.35% 0.168 273)
XYZ	xyz(13.4171, 9.8573, 46.5337)
Luminance	0.0986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404DB8 #B8AB40

analogous

#4089B8 #404DB8 #6F40B8

triadic

#404DB8 #B8404D #4DB840

tetradic

#404DB8 #B84089 #B8AB40 #40B86F

square

#404DB8 #B84089 #B8AB40 #40B86F

split-complementary

#404DB8 #B86F40 #89B840

monochromatic

#20275D #303A8B #404DB8 #6A75CB #979FDB

Accessibility & contrast

On white

7.07

#404DB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#404DB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404DB8

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404DB8	#FFFFFF	#000000	##FFFFFF
##404DB8	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBC

Deuteranopia (green-blind)

#0053B6

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #404db8;
/* rgb */ color: rgb(64, 77, 184);
/* oklch */ color: oklch(47.3% 0.168 273.0);

Tailwind

colors: {
  custom: {
    50: '#827ece',
    500: '#404db8',
    950: '#000000',
  },
}

SCSS

$custom: #404db8;
$custom-light: #827ece;
$custom-dark: #000000;

JSON

{
  "hex": "#404db8",
  "rgb": {
    "r": 64,
    "g": 77,
    "b": 184
  },
  "hsl": {
    "h": 233.5,
    "s": 48.387,
    "l": 48.627
  },
  "oklch": {
    "l": 0.47346,
    "c": 0.16788,
    "h": 273
  },
  "luminance": 0.09858
}

Semantic roles & 50–950 ramp

primary

#404DB8

secondary

#C7C08D

accent

#C950D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #404DB8

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

Preview Lab → · Contrast checker → · Palette generator →