#40499E#40499E

#40499E is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.5% C 0.137 H 274.9°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#40499E
RGB	rgb(64, 73, 158)
HSL	hsl(234, 42%, 44%)
HSV	hsv(234, 59%, 62%)
CMYK	cmyk(59.5%, 53.8%, 0%, 38%)
CIE-LAB	lab(34.65, 22.87, -47.54)
CIE-LCH	lch(34.65, 52.76, 295.69°)
OKLab	oklab(44.55% 0.0116 -0.1362)
OKLCH	oklch(44.55% 0.137 274.9)
XYZ	xyz(10.6664, 8.3229, 33.3855)
Luminance	0.0832 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40499E #9E9540

analogous

#40789E #40499E #66409E

triadic

#40499E #9E4049 #499E40

tetradic

#40499E #9E4078 #9E9540 #409E66

square

#40499E #9E4078 #9E9540 #409E66

split-complementary

#40499E #9E6640 #789E40

monochromatic

#1D2147 #2E3572 #40499E #5E67BE #8990CF

Accessibility & contrast

On white

7.88

#40499E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#40499E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40499E

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40499E	#FFFFFF	#000000	##FFFFFF
##40499E	1.00	7.88	2.66	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1656A1

Deuteranopia (green-blind)

#004E9C

Tritanopia (blue-blind)

#005D6C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #40499e;
/* rgb */ color: rgb(64, 73, 158);
/* oklch */ color: oklch(44.5% 0.137 274.9);

Tailwind

colors: {
  custom: {
    50: '#7e7bbb',
    500: '#40499e',
    950: '#000000',
  },
}

SCSS

$custom: #40499e;
$custom-light: #7e7bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#40499e",
  "rgb": {
    "r": 64,
    "g": 73,
    "b": 158
  },
  "hsl": {
    "h": 234.255,
    "s": 42.342,
    "l": 43.529
  },
  "oklch": {
    "l": 0.44549,
    "c": 0.13666,
    "h": 274.9
  },
  "luminance": 0.08324
}

Semantic roles & 50–950 ramp

primary

#40499E

secondary

#BAB480

accent

#C656D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #40499E

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

Preview Lab → · Contrast checker → · Palette generator →