#405DD3#405DD3

#405DD3 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.5% C 0.184 H 268.8°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#405DD3
RGB	rgb(64, 93, 211)
HSL	hsl(228, 63%, 54%)
HSV	hsv(228, 70%, 83%)
CMYK	cmyk(69.7%, 55.9%, 0%, 17.3%)
CIE-LAB	lab(43.68, 28.72, -64.03)
CIE-LCH	lch(43.68, 70.17, 294.16°)
OKLab	oklab(52.54% -0.004 -0.1844)
OKLCH	oklch(52.54% 0.184 268.8)
XYZ	xyz(17.7825, 13.6201, 63.3072)
Luminance	0.1362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405DD3 #D3B640

analogous

#40A7D3 #405DD3 #6D40D3

triadic

#405DD3 #D3405D #5DD340

tetradic

#405DD3 #D340A7 #D3B640 #40D36D

square

#405DD3 #D340A7 #D3B640 #40D36D

split-complementary

#405DD3 #D36D40 #A7D340

monochromatic

#1D2F7C #2842AE #405DD3 #7287DE #A3B1EA

Accessibility & contrast

On white

5.64

#405DD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#405DD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405DD3

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405DD3	#FFFFFF	#000000	##FFFFFF
##405DD3	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED7

Deuteranopia (green-blind)

#0061D1

Tritanopia (blue-blind)

#007A8F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #405dd3;
/* rgb */ color: rgb(64, 93, 211);
/* oklch */ color: oklch(52.5% 0.184 268.8);

Tailwind

colors: {
  custom: {
    50: '#878ae1',
    500: '#405dd3',
    950: '#000000',
  },
}

SCSS

$custom: #405dd3;
$custom-light: #878ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#405dd3",
  "rgb": {
    "r": 64,
    "g": 93,
    "b": 211
  },
  "hsl": {
    "h": 228.163,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.52535,
    "c": 0.18445,
    "h": 268.8
  },
  "luminance": 0.13622
}

Semantic roles & 50–950 ramp

primary

#405DD3

secondary

#D7CA98

accent

#C542E6

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #405DD3

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

Preview Lab → · Contrast checker → · Palette generator →