#404DB3#404DB3

#404DB3 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.9% C 0.161 H 273.0°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#404DB3
RGB	rgb(64, 77, 179)
HSL	hsl(233, 47%, 48%)
HSV	hsv(233, 64%, 70%)
CMYK	cmyk(64.2%, 57%, 0%, 29.8%)
CIE-LAB	lab(37.21, 27.62, -55.92)
CIE-LCH	lch(37.21, 62.37, 296.28°)
OKLab	oklab(46.95% 0.0086 -0.1608)
OKLCH	oklch(46.95% 0.161 273)
XYZ	xyz(12.9022, 9.6513, 43.8220)
Luminance	0.0965 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404DB3 #B3A640

analogous

#4087B3 #404DB3 #6C40B3

triadic

#404DB3 #B3404D #4DB340

tetradic

#404DB3 #B34087 #B3A640 #40B36C

square

#404DB3 #B34087 #B3A640 #40B36C

split-complementary

#404DB3 #B36C40 #87B340

monochromatic

#202659 #303A86 #404DB3 #6772C9 #949CD9

Accessibility & contrast

On white

7.17

#404DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#404DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404DB3

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404DB3	#FFFFFF	#000000	##FFFFFF
##404DB3	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB6

Deuteranopia (green-blind)

#0053B1

Tritanopia (blue-blind)

#006678

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #404db3;
/* rgb */ color: rgb(64, 77, 179);
/* oklch */ color: oklch(46.9% 0.161 273.0);

Tailwind

colors: {
  custom: {
    50: '#817eca',
    500: '#404db3',
    950: '#000000',
  },
}

SCSS

$custom: #404db3;
$custom-light: #817eca;
$custom-dark: #000000;

JSON

{
  "hex": "#404db3",
  "rgb": {
    "r": 64,
    "g": 77,
    "b": 179
  },
  "hsl": {
    "h": 233.217,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.46948,
    "c": 0.16102,
    "h": 273
  },
  "luminance": 0.09652
}

Semantic roles & 50–950 ramp

primary

#404DB3

secondary

#C4BE8A

accent

#C851D7

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #404DB3

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

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