#405DB5#405DB5

#405DB5 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.3% C 0.143 H 267.4°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#405DB5
RGB	rgb(64, 93, 181)
HSL	hsl(225, 48%, 48%)
HSV	hsv(225, 65%, 71%)
CMYK	cmyk(64.6%, 48.6%, 0%, 29%)
CIE-LAB	lab(41.62, 18.00, -49.98)
CIE-LCH	lch(41.62, 53.12, 289.80°)
OKLab	oklab(50.32% -0.0065 -0.1431)
OKLCH	oklch(50.32% 0.143 267.4)
XYZ	xyz(14.3663, 12.2536, 45.3152)
Luminance	0.1226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405DB5 #B59840

analogous

#4097B5 #405DB5 #5D40B5

triadic

#405DB5 #B5405D #5DB540

tetradic

#405DB5 #B54097 #B59840 #40B55D

square

#405DB5 #B54097 #B59840 #40B55D

split-complementary

#405DB5 #B55D40 #97B540

monochromatic

#202F5B #304688 #405DB5 #6881CA #96A7DA

Accessibility & contrast

On white

6.09

#405DB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#405DB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405DB5

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405DB5	#FFFFFF	#000000	##FFFFFF
##405DB5	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F68B8

Deuteranopia (green-blind)

#155DB3

Tritanopia (blue-blind)

#007180

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #405db5;
/* rgb */ color: rgb(64, 93, 181);
/* oklch */ color: oklch(50.3% 0.143 267.4);

Tailwind

colors: {
  custom: {
    50: '#818acc',
    500: '#405db5',
    950: '#000000',
  },
}

SCSS

$custom: #405db5;
$custom-light: #818acc;
$custom-dark: #000000;

JSON

{
  "hex": "#405db5",
  "rgb": {
    "r": 64,
    "g": 93,
    "b": 181
  },
  "hsl": {
    "h": 225.128,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.50316,
    "c": 0.14325,
    "h": 267.4
  },
  "luminance": 0.12255
}

Semantic roles & 50–950 ramp

primary

#405DB5

secondary

#C5B78B

accent

#B650D7

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405DB5

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

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