#405FB0#405FB0

#405FB0 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.4% C 0.134 H 266.0°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#405FB0
RGB	rgb(64, 95, 176)
HSL	hsl(223, 47%, 47%)
HSV	hsv(223, 64%, 69%)
CMYK	cmyk(63.6%, 46%, 0%, 31%)
CIE-LAB	lab(41.86, 14.93, -46.66)
CIE-LCH	lch(41.86, 48.99, 287.74°)
OKLab	oklab(50.4% -0.0093 -0.1333)
OKLCH	oklch(50.4% 0.134 266)
XYZ	xyz(14.0403, 12.4077, 42.7209)
Luminance	0.1241 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405FB0 #B09140

analogous

#4097B0 #405FB0 #5940B0

triadic

#405FB0 #B0405F #5FB040

tetradic

#405FB0 #B04097 #B09140 #40B059

square

#405FB0 #B04097 #B09140 #40B059

split-complementary

#405FB0 #B05940 #97B040

monochromatic

#1F2F56 #304783 #405FB0 #6681C7 #93A6D8

Accessibility & contrast

On white

6.03

#405FB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#405FB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405FB0

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405FB0	#FFFFFF	#000000	##FFFFFF
##405FB0	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3868B3

Deuteranopia (green-blind)

#255EAE

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #405fb0;
/* rgb */ color: rgb(64, 95, 176);
/* oklch */ color: oklch(50.4% 0.134 266.0);

Tailwind

colors: {
  custom: {
    50: '#808cc8',
    500: '#405fb0',
    950: '#000000',
  },
}

SCSS

$custom: #405fb0;
$custom-light: #808cc8;
$custom-dark: #000000;

JSON

{
  "hex": "#405fb0",
  "rgb": {
    "r": 64,
    "g": 95,
    "b": 176
  },
  "hsl": {
    "h": 223.393,
    "s": 46.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.50399,
    "c": 0.13363,
    "h": 266
  },
  "luminance": 0.12409
}

Semantic roles & 50–950 ramp

primary

#405FB0

secondary

#C3B389

accent

#B251D6

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #405FB0

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

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