#4040A2#4040A2

#4040A2 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.1% C 0.154 H 277.7°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#4040A2
RGB	rgb(64, 64, 162)
HSL	hsl(240, 43%, 44%)
HSV	hsv(240, 60%, 64%)
CMYK	cmyk(60.5%, 60.5%, 0%, 36.5%)
CIE-LAB	lab(32.62, 30.08, -53.23)
CIE-LCH	lch(32.62, 61.14, 299.47°)
OKLab	oklab(43.14% 0.0208 -0.153)
OKLCH	oklch(43.14% 0.154 277.7)
XYZ	xyz(10.4672, 7.3646, 35.0453)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4040A2 #A2A240

analogous

#4071A2 #4040A2 #7140A2

triadic

#4040A2 #A24040 #40A240

tetradic

#4040A2 #A24071 #A2A240 #40A271

square

#4040A2 #A24071 #A2A240 #40A271

split-complementary

#4040A2 #A27140 #71A240

monochromatic

#1D1D4A #2F2F76 #4040A2 #5F5FC0 #8B8BD1

Accessibility & contrast

On white

8.49

#4040A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#4040A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040A2

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040A2	#FFFFFF	#000000	##FFFFFF
##4040A2	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A5

Deuteranopia (green-blind)

#0049A0

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4040a2;
/* rgb */ color: rgb(64, 64, 162);
/* oklch */ color: oklch(43.1% 0.154 277.7);

Tailwind

colors: {
  custom: {
    50: '#7f75be',
    500: '#4040a2',
    950: '#000000',
  },
}

SCSS

$custom: #4040a2;
$custom-light: #7f75be;
$custom-dark: #000000;

JSON

{
  "hex": "#4040a2",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 162
  },
  "hsl": {
    "h": 240,
    "s": 43.363,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43136,
    "c": 0.1544,
    "h": 277.7
  },
  "luminance": 0.07365
}

Semantic roles & 50–950 ramp

primary

#4040A2

secondary

#BCBC82

accent

#D355D3

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #4040A2

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

Preview Lab → · Contrast checker → · Palette generator →