#404DB9#404DB9

#404DB9 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.4% C 0.169 H 272.9°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#404DB9
RGB	rgb(64, 77, 185)
HSL	hsl(234, 49%, 49%)
HSV	hsv(234, 65%, 73%)
CMYK	cmyk(65.4%, 58.4%, 0%, 27.5%)
CIE-LAB	lab(37.66, 29.72, -58.73)
CIE-LCH	lch(37.66, 65.82, 296.85°)
OKLab	oklab(47.43% 0.0087 -0.169)
OKLCH	oklch(47.43% 0.169 272.9)
XYZ	xyz(13.5223, 9.8993, 47.0877)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404DB9 #B9AC40

analogous

#408AB9 #404DB9 #7040B9

triadic

#404DB9 #B9404D #4DB940

tetradic

#404DB9 #B9408A #B9AC40 #40B970

square

#404DB9 #B9408A #B9AC40 #40B970

split-complementary

#404DB9 #B97040 #8AB940

monochromatic

#21275E #303A8C #404DB9 #6B75CC #989FDB

Accessibility & contrast

On white

7.05

#404DB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#404DB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404DB9

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404DB9	#FFFFFF	#000000	##FFFFFF
##404DB9	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBD

Deuteranopia (green-blind)

#0053B7

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #404db9;
/* rgb */ color: rgb(64, 77, 185);
/* oklch */ color: oklch(47.4% 0.169 272.9);

Tailwind

colors: {
  custom: {
    50: '#827ecf',
    500: '#404db9',
    950: '#000000',
  },
}

SCSS

$custom: #404db9;
$custom-light: #827ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#404db9",
  "rgb": {
    "r": 64,
    "g": 77,
    "b": 185
  },
  "hsl": {
    "h": 233.554,
    "s": 48.594,
    "l": 48.824
  },
  "oklch": {
    "l": 0.47427,
    "c": 0.16924,
    "h": 272.9
  },
  "luminance": 0.09901
}

Semantic roles & 50–950 ramp

primary

#404DB9

secondary

#C7C18E

accent

#C950D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #404DB9

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

Preview Lab → · Contrast checker → · Palette generator →