#404EA3#404EA3

#404EA3 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.9% C 0.137 H 272.8°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#404EA3
RGB	rgb(64, 78, 163)
HSL	hsl(232, 44%, 45%)
HSV	hsv(232, 61%, 64%)
CMYK	cmyk(60.7%, 52.1%, 0%, 36.1%)
CIE-LAB	lab(36.33, 21.35, -47.83)
CIE-LCH	lch(36.33, 52.38, 294.06°)
OKLab	oklab(45.93% 0.0067 -0.1369)
OKLCH	oklch(45.93% 0.137 272.8)
XYZ	xyz(11.4474, 9.1822, 35.8123)
Luminance	0.0918 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404EA3 #A39540

analogous

#4080A3 #404EA3 #6440A3

triadic

#404EA3 #A3404E #4EA340

tetradic

#404EA3 #A34080 #A39540 #40A364

square

#404EA3 #A34080 #A39540 #40A364

split-complementary

#404EA3 #A36440 #80A340

monochromatic

#1D244B #2F3977 #404EA3 #606DC0 #8C96D2

Accessibility & contrast

On white

7.40

#404EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#404EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404EA3

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404EA3	#FFFFFF	#000000	##FFFFFF
##404EA3	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E5AA6

Deuteranopia (green-blind)

#0351A1

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #404ea3;
/* rgb */ color: rgb(64, 78, 163);
/* oklch */ color: oklch(45.9% 0.137 272.8);

Tailwind

colors: {
  custom: {
    50: '#7e7fbf',
    500: '#404ea3',
    950: '#000000',
  },
}

SCSS

$custom: #404ea3;
$custom-light: #7e7fbf;
$custom-dark: #000000;

JSON

{
  "hex": "#404ea3",
  "rgb": {
    "r": 64,
    "g": 78,
    "b": 163
  },
  "hsl": {
    "h": 231.515,
    "s": 43.612,
    "l": 44.51
  },
  "oklch": {
    "l": 0.45928,
    "c": 0.13711,
    "h": 272.8
  },
  "luminance": 0.09183
}

Semantic roles & 50–950 ramp

primary

#404EA3

secondary

#BDB482

accent

#C154D3

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0A12

muted

#7C7C81

Preview Lab

Preview with #404EA3

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

Preview Lab → · Contrast checker → · Palette generator →