#404399#404399

#404399 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.0% C 0.138 H 277.4°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#404399
RGB	rgb(64, 67, 153)
HSL	hsl(238, 41%, 43%)
HSV	hsv(238, 58%, 60%)
CMYK	cmyk(58.2%, 56.2%, 0%, 40%)
CIE-LAB	lab(32.71, 25.06, -47.65)
CIE-LCH	lch(32.71, 53.84, 297.74°)
OKLab	oklab(42.99% 0.0177 -0.1365)
OKLCH	oklch(42.99% 0.138 277.4)
XYZ	xyz(9.8694, 7.4035, 31.0398)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404399 #999640

analogous

#406F99 #404399 #6A4099

triadic

#404399 #994043 #439940

tetradic

#404399 #99406F #999640 #40996A

square

#404399 #99406F #999640 #40996A

split-complementary

#404399 #996A40 #6F9940

monochromatic

#1C1D43 #2E306E #404399 #5C5FBB #8789CD

Accessibility & contrast

On white

8.47

#404399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#404399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404399

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404399	#FFFFFF	#000000	##FFFFFF
##404399	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05519C

Deuteranopia (green-blind)

#004997

Tritanopia (blue-blind)

#0A5767

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #404399;
/* rgb */ color: rgb(64, 67, 153);
/* oklch */ color: oklch(43.0% 0.138 277.4);

Tailwind

colors: {
  custom: {
    50: '#7d77b8',
    500: '#404399',
    950: '#000000',
  },
}

SCSS

$custom: #404399;
$custom-light: #7d77b8;
$custom-dark: #000000;

JSON

{
  "hex": "#404399",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 153
  },
  "hsl": {
    "h": 237.978,
    "s": 41.014,
    "l": 42.549
  },
  "oklch": {
    "l": 0.42985,
    "c": 0.13769,
    "h": 277.4
  },
  "luminance": 0.07404
}

Semantic roles & 50–950 ramp

primary

#404399

secondary

#B7B57E

accent

#CD57D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #404399

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

Preview Lab → · Contrast checker → · Palette generator →