#404E9D#404E9D

#404E9D is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.5% C 0.128 H 272.7°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#404E9D
RGB	rgb(64, 78, 157)
HSL	hsl(231, 42%, 43%)
HSV	hsv(231, 59%, 62%)
CMYK	cmyk(59.2%, 50.3%, 0%, 38.4%)
CIE-LAB	lab(35.93, 19.25, -44.87)
CIE-LCH	lch(35.93, 48.83, 293.22°)
OKLab	oklab(45.5% 0.0061 -0.1283)
OKLCH	oklch(45.5% 0.128 272.7)
XYZ	xyz(10.9225, 8.9723, 33.0480)
Luminance	0.0897 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404E9D #9D8F40

analogous

#407C9D #404E9D #60409D

triadic

#404E9D #9D404E #4E9D40

tetradic

#404E9D #9D407C #9D8F40 #409D60

square

#404E9D #9D407C #9D8F40 #409D60

split-complementary

#404E9D #9D6040 #7C9D40

monochromatic

#1D2346 #2E3872 #404E9D #5D6CBD #8993CF

Accessibility & contrast

On white

7.51

#404E9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#404E9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404E9D

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404E9D	#FFFFFF	#000000	##FFFFFF
##404E9D	1.00	7.51	2.79	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2559A0

Deuteranopia (green-blind)

#15519B

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #404e9d;
/* rgb */ color: rgb(64, 78, 157);
/* oklch */ color: oklch(45.5% 0.128 272.7);

Tailwind

colors: {
  custom: {
    50: '#7d7fba',
    500: '#404e9d',
    950: '#000000',
  },
}

SCSS

$custom: #404e9d;
$custom-light: #7d7fba;
$custom-dark: #000000;

JSON

{
  "hex": "#404e9d",
  "rgb": {
    "r": 64,
    "g": 78,
    "b": 157
  },
  "hsl": {
    "h": 230.968,
    "s": 42.081,
    "l": 43.333
  },
  "oklch": {
    "l": 0.45496,
    "c": 0.12841,
    "h": 272.7
  },
  "luminance": 0.08973
}

Semantic roles & 50–950 ramp

primary

#404E9D

secondary

#B9B17F

accent

#BF56D2

background

#F8F7FB

surface

#EFEEF6

border

#CAC9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #404E9D

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

Preview Lab → · Contrast checker → · Palette generator →