#405BC3#405BC3

#405BC3 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.9% C 0.165 H 268.9°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#405BC3
RGB	rgb(64, 91, 195)
HSL	hsl(228, 52%, 51%)
HSV	hsv(228, 67%, 76%)
CMYK	cmyk(67.2%, 53.3%, 0%, 23.5%)
CIE-LAB	lab(42.02, 24.28, -57.50)
CIE-LCH	lch(42.02, 62.42, 292.89°)
OKLab	oklab(50.92% -0.0033 -0.1652)
OKLCH	oklch(50.92% 0.165 268.9)
XYZ	xyz(15.7024, 12.5108, 53.2065)
Luminance	0.1251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405BC3 #C3A840

analogous

#409CC3 #405BC3 #6740C3

triadic

#405BC3 #C3405B #5BC340

tetradic

#405BC3 #C3409C #C3A840 #40C367

square

#405BC3 #C3409C #C3A840 #40C367

split-complementary

#405BC3 #C36740 #9CC340

monochromatic

#212F68 #2F4597 #405BC3 #6F83D2 #9DABE0

Accessibility & contrast

On white

6.00

#405BC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#405BC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405BC3

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405BC3	#FFFFFF	#000000	##FFFFFF
##405BC3	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1269C7

Deuteranopia (green-blind)

#005DC1

Tritanopia (blue-blind)

#007486

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405bc3;
/* rgb */ color: rgb(64, 91, 195);
/* oklch */ color: oklch(50.9% 0.165 268.9);

Tailwind

colors: {
  custom: {
    50: '#8389d6',
    500: '#405bc3',
    950: '#000000',
  },
}

SCSS

$custom: #405bc3;
$custom-light: #8389d6;
$custom-dark: #000000;

JSON

{
  "hex": "#405bc3",
  "rgb": {
    "r": 64,
    "g": 91,
    "b": 195
  },
  "hsl": {
    "h": 227.634,
    "s": 52.191,
    "l": 50.784
  },
  "oklch": {
    "l": 0.5092,
    "c": 0.16528,
    "h": 268.9
  },
  "luminance": 0.12512
}

Semantic roles & 50–950 ramp

primary

#405BC3

secondary

#CCC092

accent

#BE4CDC

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #405BC3

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

Preview Lab → · Contrast checker → · Palette generator →