#405FCB#405FCB

#405FCB is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.3% C 0.171 H 267.9°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#405FCB
RGB	rgb(64, 95, 203)
HSL	hsl(227, 57%, 52%)
HSV	hsv(227, 68%, 80%)
CMYK	cmyk(68.5%, 53.2%, 0%, 20.4%)
CIE-LAB	lab(43.63, 24.58, -59.51)
CIE-LCH	lch(43.63, 64.39, 292.44°)
OKLab	oklab(52.32% -0.0061 -0.1711)
OKLCH	oklch(52.32% 0.171 267.9)
XYZ	xyz(16.9823, 13.5845, 58.2154)
Luminance	0.1359 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405FCB #CBAC40

analogous

#40A4CB #405FCB #6740CB

triadic

#405FCB #CB405F #5FCB40

tetradic

#405FCB #CB40A4 #CBAC40 #40CB67

square

#405FCB #CB40A4 #CBAC40 #40CB67

split-complementary

#405FCB #CB6740 #A4CB40

monochromatic

#1F3172 #2C46A2 #405FCB #7087D8 #A0B0E5

Accessibility & contrast

On white

5.65

#405FCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#405FCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405FCB

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405FCB	#FFFFFF	#000000	##FFFFFF
##405FCB	1.00	5.65	3.72	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#126ECF

Deuteranopia (green-blind)

#0061C9

Tritanopia (blue-blind)

#00798C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #405fcb;
/* rgb */ color: rgb(64, 95, 203);
/* oklch */ color: oklch(52.3% 0.171 267.9);

Tailwind

colors: {
  custom: {
    50: '#858cdc',
    500: '#405fcb',
    950: '#000000',
  },
}

SCSS

$custom: #405fcb;
$custom-light: #858cdc;
$custom-dark: #000000;

JSON

{
  "hex": "#405fcb",
  "rgb": {
    "r": 64,
    "g": 95,
    "b": 203
  },
  "hsl": {
    "h": 226.619,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.52315,
    "c": 0.17123,
    "h": 267.9
  },
  "luminance": 0.13586
}

Semantic roles & 50–950 ramp

primary

#405FCB

secondary

#D2C495

accent

#BE47E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #405FCB

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

Preview Lab → · Contrast checker → · Palette generator →