#405CC8#405CC8

#405CC8 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.5% C 0.171 H 268.7°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#405CC8
RGB	rgb(64, 92, 200)
HSL	hsl(228, 55%, 52%)
HSV	hsv(228, 68%, 78%)
CMYK	cmyk(68%, 54%, 0%, 21.6%)
CIE-LAB	lab(42.63, 25.43, -59.40)
CIE-LCH	lch(42.63, 64.62, 293.17°)
OKLab	oklab(51.5% -0.0038 -0.1708)
OKLCH	oklch(51.5% 0.171 268.7)
XYZ	xyz(16.3632, 12.9128, 56.2625)
Luminance	0.1291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405CC8 #C8AC40

analogous

#40A0C8 #405CC8 #6840C8

triadic

#405CC8 #C8405C #5CC840

tetradic

#405CC8 #C840A0 #C8AC40 #40C868

square

#405CC8 #C840A0 #C8AC40 #40C868

split-complementary

#405CC8 #C86840 #A0C840

monochromatic

#20306E #2D449D #405CC8 #7085D6 #9FADE3

Accessibility & contrast

On white

5.86

#405CC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#405CC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405CC8

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405CC8	#FFFFFF	#000000	##FFFFFF
##405CC8	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#076BCC

Deuteranopia (green-blind)

#005FC6

Tritanopia (blue-blind)

#007689

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #405cc8;
/* rgb */ color: rgb(64, 92, 200);
/* oklch */ color: oklch(51.5% 0.171 268.7);

Tailwind

colors: {
  custom: {
    50: '#8489d9',
    500: '#405cc8',
    950: '#000000',
  },
}

SCSS

$custom: #405cc8;
$custom-light: #8489d9;
$custom-dark: #000000;

JSON

{
  "hex": "#405cc8",
  "rgb": {
    "r": 64,
    "g": 92,
    "b": 200
  },
  "hsl": {
    "h": 227.647,
    "s": 55.285,
    "l": 51.765
  },
  "oklch": {
    "l": 0.51495,
    "c": 0.17087,
    "h": 268.7
  },
  "luminance": 0.12914
}

Semantic roles & 50–950 ramp

primary

#405CC8

secondary

#D0C394

accent

#C049DF

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #405CC8

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

Preview Lab → · Contrast checker → · Palette generator →