#404DB1#404DB1

#404DB1 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.8% C 0.158 H 273.1°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#404DB1
RGB	rgb(64, 77, 177)
HSL	hsl(233, 47%, 47%)
HSV	hsv(233, 64%, 69%)
CMYK	cmyk(63.8%, 56.5%, 0%, 30.6%)
CIE-LAB	lab(37.06, 26.92, -54.98)
CIE-LCH	lch(37.06, 61.22, 296.08°)
OKLab	oklab(46.79% 0.0085 -0.158)
OKLCH	oklch(46.79% 0.158 273.1)
XYZ	xyz(12.7014, 9.5710, 42.7645)
Luminance	0.0957 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404DB1 #B1A440

analogous

#4086B1 #404DB1 #6B40B1

triadic

#404DB1 #B1404D #4DB140

tetradic

#404DB1 #B14086 #B1A440 #40B16B

square

#404DB1 #B14086 #B1A440 #40B16B

split-complementary

#404DB1 #B16B40 #86B140

monochromatic

#1F2657 #303984 #404DB1 #6672C8 #939BD8

Accessibility & contrast

On white

7.21

#404DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#404DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404DB1

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404DB1	#FFFFFF	#000000	##FFFFFF
##404DB1	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB4

Deuteranopia (green-blind)

#0052AF

Tritanopia (blue-blind)

#006577

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #404db1;
/* rgb */ color: rgb(64, 77, 177);
/* oklch */ color: oklch(46.8% 0.158 273.1);

Tailwind

colors: {
  custom: {
    50: '#817ec9',
    500: '#404db1',
    950: '#000000',
  },
}

SCSS

$custom: #404db1;
$custom-light: #817ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#404db1",
  "rgb": {
    "r": 64,
    "g": 77,
    "b": 177
  },
  "hsl": {
    "h": 233.097,
    "s": 46.888,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46791,
    "c": 0.15824,
    "h": 273.1
  },
  "luminance": 0.09572
}

Semantic roles & 50–950 ramp

primary

#404DB1

secondary

#C3BD89

accent

#C751D7

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #404DB1

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

Preview Lab → · Contrast checker → · Palette generator →