#405BBF#405BBF

#405BBF is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.6% C 0.160 H 268.7°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#405BBF
RGB	rgb(64, 91, 191)
HSL	hsl(227, 50%, 50%)
HSV	hsv(227, 66%, 75%)
CMYK	cmyk(66.5%, 52.4%, 0%, 25.1%)
CIE-LAB	lab(41.74, 22.85, -55.63)
CIE-LCH	lch(41.74, 60.14, 292.34°)
OKLab	oklab(50.62% -0.0036 -0.1597)
OKLCH	oklch(50.62% 0.16 268.7)
XYZ	xyz(15.2562, 12.3323, 50.8565)
Luminance	0.1233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405BBF #BFA440

analogous

#409BBF #405BBF #6440BF

triadic

#405BBF #BF405B #5BBF40

tetradic

#405BBF #BF409B #BFA440 #40BF64

square

#405BBF #BF409B #BFA440 #40BF64

split-complementary

#405BBF #BF6440 #9BBF40

monochromatic

#212F63 #314591 #405BBF #6E82CE #9CAADE

Accessibility & contrast

On white

6.06

#405BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#405BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405BBF

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405BBF	#FFFFFF	#000000	##FFFFFF
##405BBF	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B68C3

Deuteranopia (green-blind)

#005DBD

Tritanopia (blue-blind)

#007384

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #405bbf;
/* rgb */ color: rgb(64, 91, 191);
/* oklch */ color: oklch(50.6% 0.160 268.7);

Tailwind

colors: {
  custom: {
    50: '#8389d3',
    500: '#405bbf',
    950: '#000000',
  },
}

SCSS

$custom: #405bbf;
$custom-light: #8389d3;
$custom-dark: #000000;

JSON

{
  "hex": "#405bbf",
  "rgb": {
    "r": 64,
    "g": 91,
    "b": 191
  },
  "hsl": {
    "h": 227.244,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.50623,
    "c": 0.15977,
    "h": 268.7
  },
  "luminance": 0.12334
}

Semantic roles & 50–950 ramp

primary

#405BBF

secondary

#CABE91

accent

#BC4ED9

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #405BBF

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

Preview Lab → · Contrast checker → · Palette generator →