#404EBB#404EBB

#404EBB is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.8% C 0.171 H 272.6°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#404EBB
RGB	rgb(64, 78, 187)
HSL	hsl(233, 49%, 49%)
HSV	hsv(233, 66%, 73%)
CMYK	cmyk(65.8%, 58.3%, 0%, 26.7%)
CIE-LAB	lab(38.07, 29.78, -59.24)
CIE-LCH	lch(38.07, 66.31, 296.69°)
OKLab	oklab(47.78% 0.0078 -0.1705)
OKLCH	oklch(47.78% 0.171 272.6)
XYZ	xyz(13.8054, 10.1254, 48.2309)
Luminance	0.1013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404EBB #BBAD40

analogous

#408CBB #404EBB #7040BB

triadic

#404EBB #BB404E #4EBB40

tetradic

#404EBB #BB408C #BBAD40 #40BB70

square

#404EBB #BB408C #BBAD40 #40BB70

split-complementary

#404EBB #BB7040 #8CBB40

monochromatic

#212860 #303B8D #404EBB #6C77CD #99A1DC

Accessibility & contrast

On white

6.94

#404EBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#404EBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #404EBB

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404EBB	#FFFFFF	#000000	##FFFFFF
##404EBB	1.00	6.94	3.03	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBF

Deuteranopia (green-blind)

#0054B9

Tritanopia (blue-blind)

#00697D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #404ebb;
/* rgb */ color: rgb(64, 78, 187);
/* oklch */ color: oklch(47.8% 0.171 272.6);

Tailwind

colors: {
  custom: {
    50: '#837fd0',
    500: '#404ebb',
    950: '#000000',
  },
}

SCSS

$custom: #404ebb;
$custom-light: #837fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#404ebb",
  "rgb": {
    "r": 64,
    "g": 78,
    "b": 187
  },
  "hsl": {
    "h": 233.171,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.47776,
    "c": 0.17071,
    "h": 272.6
  },
  "luminance": 0.10127
}

Semantic roles & 50–950 ramp

primary

#404EBB

secondary

#C8C28F

accent

#C94FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #404EBB

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

Preview Lab → · Contrast checker → · Palette generator →