#404FBB#404FBB

#404FBB is a mid, vivid blue. Relative luminance 0.103; OKLCH L 48.0% C 0.169 H 272.3°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#404FBB
RGB	rgb(64, 79, 187)
HSL	hsl(233, 49%, 49%)
HSV	hsv(233, 66%, 73%)
CMYK	cmyk(65.8%, 57.8%, 0%, 26.7%)
CIE-LAB	lab(38.32, 29.14, -58.83)
CIE-LCH	lch(38.32, 65.65, 296.35°)
OKLab	oklab(47.97% 0.0069 -0.1693)
OKLCH	oklch(47.97% 0.169 272.3)
XYZ	xyz(13.8770, 10.2686, 48.2548)
Luminance	0.1027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404FBB #BBAC40

analogous

#408DBB #404FBB #6F40BB

triadic

#404FBB #BB404F #4FBB40

tetradic

#404FBB #BB408D #BBAC40 #40BB6F

square

#404FBB #BB408D #BBAC40 #40BB6F

split-complementary

#404FBB #BB6F40 #8DBB40

monochromatic

#212860 #303C8D #404FBB #6C77CD #99A1DC

Accessibility & contrast

On white

6.88

#404FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#404FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #404FBB

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404FBB	#FFFFFF	#000000	##FFFFFF
##404FBB	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060BF

Deuteranopia (green-blind)

#0055B9

Tritanopia (blue-blind)

#00697D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #404fbb;
/* rgb */ color: rgb(64, 79, 187);
/* oklch */ color: oklch(48.0% 0.169 272.3);

Tailwind

colors: {
  custom: {
    50: '#8380d0',
    500: '#404fbb',
    950: '#000000',
  },
}

SCSS

$custom: #404fbb;
$custom-light: #8380d0;
$custom-dark: #000000;

JSON

{
  "hex": "#404fbb",
  "rgb": {
    "r": 64,
    "g": 79,
    "b": 187
  },
  "hsl": {
    "h": 232.683,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.47965,
    "c": 0.16945,
    "h": 272.3
  },
  "luminance": 0.1027
}

Semantic roles & 50–950 ramp

primary

#404FBB

secondary

#C8C18F

accent

#C84FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #404FBB

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

Preview Lab → · Contrast checker → · Palette generator →