#404EC9#404EC9

#404EC9 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.9% C 0.189 H 272.3°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#404EC9
RGB	rgb(64, 78, 201)
HSL	hsl(234, 56%, 52%)
HSV	hsv(234, 68%, 79%)
CMYK	cmyk(68.2%, 61.2%, 0%, 21.2%)
CIE-LAB	lab(39.16, 34.68, -65.62)
CIE-LCH	lch(39.16, 74.22, 297.85°)
OKLab	oklab(48.93% 0.0076 -0.1893)
OKLCH	oklch(48.93% 0.189 272.3)
XYZ	xyz(15.3778, 10.7544, 56.5124)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.02

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404EC9 #C9BB40

analogous

#4092C9 #404EC9 #7740C9

triadic

#404EC9 #C9404E #4EC940

tetradic

#404EC9 #C94092 #C9BB40 #40C977

square

#404EC9 #C94092 #C9BB40 #40C977

split-complementary

#404EC9 #C97740 #92C940

monochromatic

#1F286F #2D399F #404EC9 #707AD6 #9FA6E4

Accessibility & contrast

On white

6.66

#404EC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#404EC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #404EC9

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404EC9	#FFFFFF	#000000	##FFFFFF
##404EC9	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CD

Deuteranopia (green-blind)

#0056C7

Tritanopia (blue-blind)

#006D84

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #404ec9;
/* rgb */ color: rgb(64, 78, 201);
/* oklch */ color: oklch(48.9% 0.189 272.3);

Tailwind

colors: {
  custom: {
    50: '#867fda',
    500: '#404ec9',
    950: '#000000',
  },
}

SCSS

$custom: #404ec9;
$custom-light: #867fda;
$custom-dark: #000000;

JSON

{
  "hex": "#404ec9",
  "rgb": {
    "r": 64,
    "g": 78,
    "b": 201
  },
  "hsl": {
    "h": 233.869,
    "s": 55.918,
    "l": 51.961
  },
  "oklch": {
    "l": 0.48932,
    "c": 0.18941,
    "h": 272.3
  },
  "luminance": 0.10756
}

Semantic roles & 50–950 ramp

primary

#404EC9

secondary

#D0CA94

accent

#D049DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #404EC9

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

Preview Lab → · Contrast checker → · Palette generator →