#405CC3#405CC3

#405CC3 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.1% C 0.164 H 268.6°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#405CC3
RGB	rgb(64, 92, 195)
HSL	hsl(227, 52%, 51%)
HSV	hsv(227, 67%, 76%)
CMYK	cmyk(67.2%, 52.8%, 0%, 23.5%)
CIE-LAB	lab(42.28, 23.64, -57.07)
CIE-LCH	lch(42.28, 61.78, 292.50°)
OKLab	oklab(51.12% -0.0041 -0.164)
OKLCH	oklch(51.12% 0.164 268.6)
XYZ	xyz(15.7884, 12.6829, 53.2352)
Luminance	0.1268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405CC3 #C3A740

analogous

#409DC3 #405CC3 #6640C3

triadic

#405CC3 #C3405C #5CC340

tetradic

#405CC3 #C3409D #C3A740 #40C366

square

#405CC3 #C3409D #C3A740 #40C366

split-complementary

#405CC3 #C36640 #9DC340

monochromatic

#213068 #2F4597 #405CC3 #6F84D2 #9DABE0

Accessibility & contrast

On white

5.94

#405CC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#405CC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405CC3

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405CC3	#FFFFFF	#000000	##FFFFFF
##405CC3	1.00	5.94	3.54	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#176AC7

Deuteranopia (green-blind)

#005EC1

Tritanopia (blue-blind)

#007486

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #405cc3;
/* rgb */ color: rgb(64, 92, 195);
/* oklch */ color: oklch(51.1% 0.164 268.6);

Tailwind

colors: {
  custom: {
    50: '#8389d6',
    500: '#405cc3',
    950: '#000000',
  },
}

SCSS

$custom: #405cc3;
$custom-light: #8389d6;
$custom-dark: #000000;

JSON

{
  "hex": "#405cc3",
  "rgb": {
    "r": 64,
    "g": 92,
    "b": 195
  },
  "hsl": {
    "h": 227.176,
    "s": 52.191,
    "l": 50.784
  },
  "oklch": {
    "l": 0.5112,
    "c": 0.16403,
    "h": 268.6
  },
  "luminance": 0.12684
}

Semantic roles & 50–950 ramp

primary

#405CC3

secondary

#CCC092

accent

#BD4CDC

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #405CC3

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

Preview Lab → · Contrast checker → · Palette generator →