#404EB9#404EB9

#404EB9 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.6% C 0.168 H 272.7°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#404EB9
RGB	rgb(64, 78, 185)
HSL	hsl(233, 49%, 49%)
HSV	hsv(233, 65%, 73%)
CMYK	cmyk(65.4%, 57.8%, 0%, 27.5%)
CIE-LAB	lab(37.91, 29.08, -58.31)
CIE-LCH	lch(37.91, 65.16, 296.51°)
OKLab	oklab(47.62% 0.0078 -0.1678)
OKLCH	oklch(47.62% 0.168 272.7)
XYZ	xyz(13.5928, 10.0403, 47.1112)
Luminance	0.1004 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404EB9 #B9AB40

analogous

#408BB9 #404EB9 #6F40B9

triadic

#404EB9 #B9404E #4EB940

tetradic

#404EB9 #B9408B #B9AB40 #40B96F

square

#404EB9 #B9408B #B9AB40 #40B96F

split-complementary

#404EB9 #B96F40 #8BB940

monochromatic

#21285E #303B8C #404EB9 #6B76CC #98A0DB

Accessibility & contrast

On white

6.98

#404EB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#404EB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #404EB9

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404EB9	#FFFFFF	#000000	##FFFFFF
##404EB9	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBD

Deuteranopia (green-blind)

#0054B7

Tritanopia (blue-blind)

#00687C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #404eb9;
/* rgb */ color: rgb(64, 78, 185);
/* oklch */ color: oklch(47.6% 0.168 272.7);

Tailwind

colors: {
  custom: {
    50: '#827fcf',
    500: '#404eb9',
    950: '#000000',
  },
}

SCSS

$custom: #404eb9;
$custom-light: #827fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#404eb9",
  "rgb": {
    "r": 64,
    "g": 78,
    "b": 185
  },
  "hsl": {
    "h": 233.058,
    "s": 48.594,
    "l": 48.824
  },
  "oklch": {
    "l": 0.47616,
    "c": 0.16798,
    "h": 272.7
  },
  "luminance": 0.10042
}

Semantic roles & 50–950 ramp

primary

#404EB9

secondary

#C7C18E

accent

#C850D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #404EB9

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

Preview Lab → · Contrast checker → · Palette generator →