#405FBB#405FBB

#405FBB is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.2% C 0.149 H 267.0°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#405FBB
RGB	rgb(64, 95, 187)
HSL	hsl(225, 49%, 49%)
HSV	hsv(225, 66%, 73%)
CMYK	cmyk(65.8%, 49.2%, 0%, 26.7%)
CIE-LAB	lab(42.55, 18.85, -51.98)
CIE-LCH	lch(42.55, 55.30, 289.94°)
OKLab	oklab(51.15% -0.0077 -0.149)
OKLCH	oklch(51.15% 0.149 267)
XYZ	xyz(15.1731, 12.8608, 48.6868)
Luminance	0.1286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405FBB #BB9C40

analogous

#409DBB #405FBB #5F40BB

triadic

#405FBB #BB405F #5FBB40

tetradic

#405FBB #BB409D #BB9C40 #40BB5F

square

#405FBB #BB409D #BB9C40 #40BB5F

split-complementary

#405FBB #BB5F40 #9DBB40

monochromatic

#213160 #30488D #405FBB #6C84CD #99AADC

Accessibility & contrast

On white

5.88

#405FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#405FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405FBB

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405FBB	#FFFFFF	#000000	##FFFFFF
##405FBB	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D6ABE

Deuteranopia (green-blind)

#0D5FB9

Tritanopia (blue-blind)

#007484

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #405fbb;
/* rgb */ color: rgb(64, 95, 187);
/* oklch */ color: oklch(51.2% 0.149 267.0);

Tailwind

colors: {
  custom: {
    50: '#828bd0',
    500: '#405fbb',
    950: '#000000',
  },
}

SCSS

$custom: #405fbb;
$custom-light: #828bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#405fbb",
  "rgb": {
    "r": 64,
    "g": 95,
    "b": 187
  },
  "hsl": {
    "h": 224.878,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.51154,
    "c": 0.14916,
    "h": 267
  },
  "luminance": 0.12862
}

Semantic roles & 50–950 ramp

primary

#405FBB

secondary

#C8BA8F

accent

#B64FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #405FBB

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

Preview Lab → · Contrast checker → · Palette generator →