#405CBF#405CBF

#405CBF is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.8% C 0.159 H 268.4°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#405CBF
RGB	rgb(64, 92, 191)
HSL	hsl(227, 50%, 50%)
HSV	hsv(227, 66%, 75%)
CMYK	cmyk(66.5%, 51.8%, 0%, 25.1%)
CIE-LAB	lab(42.01, 22.21, -55.19)
CIE-LCH	lch(42.01, 59.50, 291.92°)
OKLab	oklab(50.83% -0.0045 -0.1584)
OKLCH	oklch(50.83% 0.159 268.4)
XYZ	xyz(15.3422, 12.5044, 50.8852)
Luminance	0.1251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405CBF #BFA340

analogous

#409BBF #405CBF #6440BF

triadic

#405CBF #BF405C #5CBF40

tetradic

#405CBF #BF409B #BFA340 #40BF64

square

#405CBF #BF409B #BFA340 #40BF64

split-complementary

#405CBF #BF6440 #9BBF40

monochromatic

#213063 #314691 #405CBF #6E83CE #9CAADE

Accessibility & contrast

On white

6.00

#405CBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#405CBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405CBF

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405CBF	#FFFFFF	#000000	##FFFFFF
##405CBF	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)

#1F69C3

Deuteranopia (green-blind)

#005EBD

Tritanopia (blue-blind)

#007384

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405cbf;
/* rgb */ color: rgb(64, 92, 191);
/* oklch */ color: oklch(50.8% 0.159 268.4);

Tailwind

colors: {
  custom: {
    50: '#8389d3',
    500: '#405cbf',
    950: '#000000',
  },
}

SCSS

$custom: #405cbf;
$custom-light: #8389d3;
$custom-dark: #000000;

JSON

{
  "hex": "#405cbf",
  "rgb": {
    "r": 64,
    "g": 92,
    "b": 191
  },
  "hsl": {
    "h": 226.772,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.50825,
    "c": 0.15851,
    "h": 268.4
  },
  "luminance": 0.12506
}

Semantic roles & 50–950 ramp

primary

#405CBF

secondary

#CABD91

accent

#BB4ED9

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #405CBF

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

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