#404DBB#404DBB

#404DBB is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.6% C 0.172 H 272.9°. Best body text is #FFFFFF at 7.01:1 contrast (WCAG AA passes).

Color values

HEX	#404DBB
RGB	rgb(64, 77, 187)
HSL	hsl(234, 49%, 49%)
HSV	hsv(234, 66%, 73%)
CMYK	cmyk(65.8%, 58.8%, 0%, 26.7%)
CIE-LAB	lab(37.81, 30.42, -59.65)
CIE-LCH	lch(37.81, 66.96, 297.02°)
OKLab	oklab(47.59% 0.0087 -0.1717)
OKLCH	oklch(47.59% 0.172 272.9)
XYZ	xyz(13.7349, 9.9844, 48.2074)
Luminance	0.0999 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404DBB #BBAE40

analogous

#408ABB #404DBB #7140BB

triadic

#404DBB #BB404D #4DBB40

tetradic

#404DBB #BB408A #BBAE40 #40BB71

square

#404DBB #BB408A #BBAE40 #40BB71

split-complementary

#404DBB #BB7140 #8ABB40

monochromatic

#212760 #303A8D #404DBB #6C76CD #99A0DC

Accessibility & contrast

On white

7.01

#404DBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#404DBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #404DBB

7.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404DBB	#FFFFFF	#000000	##FFFFFF
##404DBB	1.00	7.01	3.00	7.01
#FFFFFF	7.01	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBF

Deuteranopia (green-blind)

#0054B9

Tritanopia (blue-blind)

#00687C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #404dbb;
/* rgb */ color: rgb(64, 77, 187);
/* oklch */ color: oklch(47.6% 0.172 272.9);

Tailwind

colors: {
  custom: {
    50: '#837ed0',
    500: '#404dbb',
    950: '#000000',
  },
}

SCSS

$custom: #404dbb;
$custom-light: #837ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#404dbb",
  "rgb": {
    "r": 64,
    "g": 77,
    "b": 187
  },
  "hsl": {
    "h": 233.659,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.47589,
    "c": 0.17196,
    "h": 272.9
  },
  "luminance": 0.09986
}

Semantic roles & 50–950 ramp

primary

#404DBB

secondary

#C8C28F

accent

#CA4FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #404DBB

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

Preview Lab → · Contrast checker → · Palette generator →