#404CB5#404CB5

#404CB5 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.9% C 0.165 H 273.3°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#404CB5
RGB	rgb(64, 76, 181)
HSL	hsl(234, 48%, 48%)
HSV	hsv(234, 65%, 71%)
CMYK	cmyk(64.6%, 58%, 0%, 29%)
CIE-LAB	lab(37.10, 28.96, -57.28)
CIE-LCH	lch(37.10, 64.18, 296.82°)
OKLab	oklab(46.92% 0.0095 -0.1648)
OKLCH	oklch(46.92% 0.165 273.3)
XYZ	xyz(13.0365, 9.5939, 44.8719)
Luminance	0.0959 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404CB5 #B5A940

analogous

#4086B5 #404CB5 #6E40B5

triadic

#404CB5 #B5404C #4CB540

tetradic

#404CB5 #B54086 #B5A940 #40B56E

square

#404CB5 #B54086 #B5A940 #40B56E

split-complementary

#404CB5 #B56E40 #86B540

monochromatic

#20265B #303988 #404CB5 #6872CA #969DDA

Accessibility & contrast

On white

7.19

#404CB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#404CB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404CB5

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404CB5	#FFFFFF	#000000	##FFFFFF
##404CB5	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB9

Deuteranopia (green-blind)

#0052B3

Tritanopia (blue-blind)

#006579

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #404cb5;
/* rgb */ color: rgb(64, 76, 181);
/* oklch */ color: oklch(46.9% 0.165 273.3);

Tailwind

colors: {
  custom: {
    50: '#827ecc',
    500: '#404cb5',
    950: '#000000',
  },
}

SCSS

$custom: #404cb5;
$custom-light: #827ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#404cb5",
  "rgb": {
    "r": 64,
    "g": 76,
    "b": 181
  },
  "hsl": {
    "h": 233.846,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.46917,
    "c": 0.16504,
    "h": 273.3
  },
  "luminance": 0.09595
}

Semantic roles & 50–950 ramp

primary

#404CB5

secondary

#C5BF8B

accent

#CA50D7

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0913

muted

#7D7B82

Preview Lab

Preview with #404CB5

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

Preview Lab → · Contrast checker → · Palette generator →