#404BB3#404BB3

#404BB3 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.6% C 0.164 H 273.6°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#404BB3
RGB	rgb(64, 75, 179)
HSL	hsl(234, 47%, 48%)
HSV	hsv(234, 64%, 70%)
CMYK	cmyk(64.2%, 58.1%, 0%, 29.8%)
CIE-LAB	lab(36.70, 28.90, -56.75)
CIE-LCH	lch(36.70, 63.69, 296.99°)
OKLab	oklab(46.57% 0.0104 -0.1632)
OKLCH	oklch(46.57% 0.164 273.6)
XYZ	xyz(12.7644, 9.3757, 43.7761)
Luminance	0.0938 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404BB3 #B3A840

analogous

#4084B3 #404BB3 #6F40B3

triadic

#404BB3 #B3404B #4BB340

tetradic

#404BB3 #B34084 #B3A840 #40B36F

square

#404BB3 #B34084 #B3A840 #40B36F

split-complementary

#404BB3 #B36F40 #84B340

monochromatic

#202559 #303886 #404BB3 #6771C9 #949BD9

Accessibility & contrast

On white

7.30

#404BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#404BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404BB3

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404BB3	#FFFFFF	#000000	##FFFFFF
##404BB3	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB6

Deuteranopia (green-blind)

#0051B1

Tritanopia (blue-blind)

#006477

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #404bb3;
/* rgb */ color: rgb(64, 75, 179);
/* oklch */ color: oklch(46.6% 0.164 273.6);

Tailwind

colors: {
  custom: {
    50: '#817dca',
    500: '#404bb3',
    950: '#000000',
  },
}

SCSS

$custom: #404bb3;
$custom-light: #817dca;
$custom-dark: #000000;

JSON

{
  "hex": "#404bb3",
  "rgb": {
    "r": 64,
    "g": 75,
    "b": 179
  },
  "hsl": {
    "h": 234.261,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.46567,
    "c": 0.16358,
    "h": 273.6
  },
  "luminance": 0.09377
}

Semantic roles & 50–950 ramp

primary

#404BB3

secondary

#C4BF8A

accent

#CA51D7

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #404BB3

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

Preview Lab → · Contrast checker → · Palette generator →