#405A9B#405A9B

#405A9B is a mid, moderate blue. Relative luminance 0.108; OKLCH L 47.9% C 0.110 H 266.0°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#405A9B
RGB	rgb(64, 90, 155)
HSL	hsl(223, 42%, 43%)
HSV	hsv(223, 59%, 61%)
CMYK	cmyk(58.7%, 41.9%, 0%, 39.2%)
CIE-LAB	lab(39.19, 10.74, -38.47)
CIE-LCH	lch(39.19, 39.94, 285.61°)
OKLab	oklab(47.94% -0.0077 -0.1093)
OKLCH	oklch(47.94% 0.11 266)
XYZ	xyz(11.6849, 10.7679, 32.4667)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405A9B #9B8140

analogous

#40879B #405A9B #53409B

triadic

#405A9B #9B405A #5A9B40

tetradic

#405A9B #9B4087 #9B8140 #409B53

square

#405A9B #9B4087 #9B8140 #409B53

split-complementary

#405A9B #9B5340 #879B40

monochromatic

#1C2844 #2E4170 #405A9B #5C78BC #889CCE

Accessibility & contrast

On white

6.66

#405A9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#405A9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405A9B

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405A9B	#FFFFFF	#000000	##FFFFFF
##405A9B	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E619E

Deuteranopia (green-blind)

#32589A

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #405a9b;
/* rgb */ color: rgb(64, 90, 155);
/* oklch */ color: oklch(47.9% 0.110 266.0);

Tailwind

colors: {
  custom: {
    50: '#7c88b9',
    500: '#405a9b',
    950: '#000000',
  },
}

SCSS

$custom: #405a9b;
$custom-light: #7c88b9;
$custom-dark: #000000;

JSON

{
  "hex": "#405a9b",
  "rgb": {
    "r": 64,
    "g": 90,
    "b": 155
  },
  "hsl": {
    "h": 222.857,
    "s": 41.553,
    "l": 42.941
  },
  "oklch": {
    "l": 0.47943,
    "c": 0.10958,
    "h": 266
  },
  "luminance": 0.10769
}

Semantic roles & 50–950 ramp

primary

#405A9B

secondary

#B8A87E

accent

#AE56D1

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B11

muted

#7C7C80

Preview Lab

Preview with #405A9B

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

Preview Lab → · Contrast checker → · Palette generator →