#404EC3#404EC3

#404EC3 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.4% C 0.181 H 272.5°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#404EC3
RGB	rgb(64, 78, 195)
HSL	hsl(234, 52%, 51%)
HSV	hsv(234, 67%, 76%)
CMYK	cmyk(67.2%, 60%, 0%, 23.5%)
CIE-LAB	lab(38.69, 32.59, -62.91)
CIE-LCH	lch(38.69, 70.85, 297.38°)
OKLab	oklab(48.43% 0.0078 -0.1813)
OKLCH	oklch(48.43% 0.181 272.5)
XYZ	xyz(14.6858, 10.4775, 52.8676)
Luminance	0.1048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404EC3 #C3B540

analogous

#408FC3 #404EC3 #7340C3

triadic

#404EC3 #C3404E #4EC340

tetradic

#404EC3 #C3408F #C3B540 #40C373

square

#404EC3 #C3408F #C3B540 #40C373

split-complementary

#404EC3 #C37340 #8FC340

monochromatic

#212868 #2F3A97 #404EC3 #6F79D2 #9DA4E0

Accessibility & contrast

On white

6.78

#404EC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#404EC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #404EC3

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404EC3	#FFFFFF	#000000	##FFFFFF
##404EC3	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C7

Deuteranopia (green-blind)

#0055C1

Tritanopia (blue-blind)

#006B81

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #404ec3;
/* rgb */ color: rgb(64, 78, 195);
/* oklch */ color: oklch(48.4% 0.181 272.5);

Tailwind

colors: {
  custom: {
    50: '#847fd6',
    500: '#404ec3',
    950: '#000000',
  },
}

SCSS

$custom: #404ec3;
$custom-light: #847fd6;
$custom-dark: #000000;

JSON

{
  "hex": "#404ec3",
  "rgb": {
    "r": 64,
    "g": 78,
    "b": 195
  },
  "hsl": {
    "h": 233.588,
    "s": 52.191,
    "l": 50.784
  },
  "oklch": {
    "l": 0.4843,
    "c": 0.18148,
    "h": 272.5
  },
  "luminance": 0.10479
}

Semantic roles & 50–950 ramp

primary

#404EC3

secondary

#CCC692

accent

#CC4CDC

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #404EC3

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

Preview Lab → · Contrast checker → · Palette generator →