#405CC9#405CC9

#405CC9 is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.6% C 0.172 H 268.8°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#405CC9
RGB	rgb(64, 92, 201)
HSL	hsl(228, 56%, 52%)
HSV	hsv(228, 68%, 79%)
CMYK	cmyk(68.2%, 54.2%, 0%, 21.2%)
CIE-LAB	lab(42.70, 25.79, -59.86)
CIE-LCH	lch(42.70, 65.18, 293.30°)
OKLab	oklab(51.57% -0.0037 -0.1722)
OKLCH	oklch(51.57% 0.172 268.8)
XYZ	xyz(16.4805, 12.9597, 56.8800)
Luminance	0.1296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405CC9 #C9AD40

analogous

#40A1C9 #405CC9 #6940C9

triadic

#405CC9 #C9405C #5CC940

tetradic

#405CC9 #C940A1 #C9AD40 #40C969

square

#405CC9 #C940A1 #C9AD40 #40C969

split-complementary

#405CC9 #C96940 #A1C940

monochromatic

#1F306F #2D449F #405CC9 #7085D6 #9FADE4

Accessibility & contrast

On white

5.85

#405CC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#405CC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405CC9

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405CC9	#FFFFFF	#000000	##FFFFFF
##405CC9	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#036BCD

Deuteranopia (green-blind)

#005FC7

Tritanopia (blue-blind)

#007689

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #405cc9;
/* rgb */ color: rgb(64, 92, 201);
/* oklch */ color: oklch(51.6% 0.172 268.8);

Tailwind

colors: {
  custom: {
    50: '#8589da',
    500: '#405cc9',
    950: '#000000',
  },
}

SCSS

$custom: #405cc9;
$custom-light: #8589da;
$custom-dark: #000000;

JSON

{
  "hex": "#405cc9",
  "rgb": {
    "r": 64,
    "g": 92,
    "b": 201
  },
  "hsl": {
    "h": 227.737,
    "s": 55.918,
    "l": 51.961
  },
  "oklch": {
    "l": 0.51571,
    "c": 0.17223,
    "h": 268.8
  },
  "luminance": 0.12961
}

Semantic roles & 50–950 ramp

primary

#405CC9

secondary

#D0C494

accent

#C049DF

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #405CC9

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

Preview Lab → · Contrast checker → · Palette generator →