#405EB9#405EB9

#405EB9 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 50.8% C 0.148 H 267.3°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#405EB9
RGB	rgb(64, 94, 185)
HSL	hsl(225, 49%, 49%)
HSV	hsv(225, 65%, 73%)
CMYK	cmyk(65.4%, 49.2%, 0%, 27.5%)
CIE-LAB	lab(42.15, 18.78, -51.47)
CIE-LCH	lch(42.15, 54.79, 290.05°)
OKLab	oklab(50.81% -0.007 -0.1474)
OKLCH	oklch(50.81% 0.148 267.3)
XYZ	xyz(14.8710, 12.5968, 47.5373)
Luminance	0.1260 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405EB9 #B99B40

analogous

#409BB9 #405EB9 #5F40B9

triadic

#405EB9 #B9405E #5EB940

tetradic

#405EB9 #B9409B #B99B40 #40B95F

square

#405EB9 #B9409B #B99B40 #40B95F

split-complementary

#405EB9 #B95F40 #9BB940

monochromatic

#21305E #30478C #405EB9 #6B83CC #98A9DB

Accessibility & contrast

On white

5.97

#405EB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#405EB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405EB9

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405EB9	#FFFFFF	#000000	##FFFFFF
##405EB9	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D69BC

Deuteranopia (green-blind)

#0E5EB7

Tritanopia (blue-blind)

#007382

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405eb9;
/* rgb */ color: rgb(64, 94, 185);
/* oklch */ color: oklch(50.8% 0.148 267.3);

Tailwind

colors: {
  custom: {
    50: '#818bcf',
    500: '#405eb9',
    950: '#000000',
  },
}

SCSS

$custom: #405eb9;
$custom-light: #818bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#405eb9",
  "rgb": {
    "r": 64,
    "g": 94,
    "b": 185
  },
  "hsl": {
    "h": 225.124,
    "s": 48.594,
    "l": 48.824
  },
  "oklch": {
    "l": 0.50805,
    "c": 0.14762,
    "h": 267.3
  },
  "luminance": 0.12598
}

Semantic roles & 50–950 ramp

primary

#405EB9

secondary

#C7B98E

accent

#B650D8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #405EB9

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

Preview Lab → · Contrast checker → · Palette generator →