#405BD3#405BD3

#405BD3 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.2% C 0.187 H 269.3°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#405BD3
RGB	rgb(64, 91, 211)
HSL	hsl(229, 63%, 54%)
HSV	hsv(229, 70%, 83%)
CMYK	cmyk(69.7%, 56.9%, 0%, 17.3%)
CIE-LAB	lab(43.17, 29.98, -64.85)
CIE-LCH	lch(43.17, 71.45, 294.81°)
OKLab	oklab(52.15% -0.0024 -0.1869)
OKLCH	oklch(52.15% 0.187 269.3)
XYZ	xyz(17.6093, 13.2736, 63.2494)
Luminance	0.1328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405BD3 #D3B840

analogous

#40A4D3 #405BD3 #6F40D3

triadic

#405BD3 #D3405B #5BD340

tetradic

#405BD3 #D340A4 #D3B840 #40D36F

square

#405BD3 #D340A4 #D3B840 #40D36F

split-complementary

#405BD3 #D36F40 #A4D340

monochromatic

#1D2E7C #2841AE #405BD3 #7286DE #A3B0EA

Accessibility & contrast

On white

5.75

#405BD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#405BD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405BD3

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405BD3	#FFFFFF	#000000	##FFFFFF
##405BD3	1.00	5.75	3.66	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD7

Deuteranopia (green-blind)

#005FD1

Tritanopia (blue-blind)

#00788E

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #405bd3;
/* rgb */ color: rgb(64, 91, 211);
/* oklch */ color: oklch(52.2% 0.187 269.3);

Tailwind

colors: {
  custom: {
    50: '#8789e1',
    500: '#405bd3',
    950: '#000000',
  },
}

SCSS

$custom: #405bd3;
$custom-light: #8789e1;
$custom-dark: #000000;

JSON

{
  "hex": "#405bd3",
  "rgb": {
    "r": 64,
    "g": 91,
    "b": 211
  },
  "hsl": {
    "h": 228.98,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.52153,
    "c": 0.1869,
    "h": 269.3
  },
  "luminance": 0.13275
}

Semantic roles & 50–950 ramp

primary

#405BD3

secondary

#D7CB98

accent

#C842E6

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #405BD3

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

Preview Lab → · Contrast checker → · Palette generator →