#4040AD#4040AD

#4040AD is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.1% C 0.169 H 276.9°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#4040AD
RGB	rgb(64, 64, 173)
HSL	hsl(240, 46%, 46%)
HSV	hsv(240, 63%, 68%)
CMYK	cmyk(63%, 63%, 0%, 32.2%)
CIE-LAB	lab(33.51, 33.83, -58.39)
CIE-LCH	lch(33.51, 67.48, 300.09°)
OKLab	oklab(44.06% 0.0203 -0.1681)
OKLCH	oklch(44.06% 0.169 276.9)
XYZ	xyz(11.4881, 7.7730, 40.4220)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4040AD #ADAD40

analogous

#4077AD #4040AD #7740AD

triadic

#4040AD #AD4040 #40AD40

tetradic

#4040AD #AD4077 #ADAD40 #40AD77

square

#4040AD #AD4077 #ADAD40 #40AD77

split-complementary

#4040AD #AD7740 #77AD40

monochromatic

#1F1F54 #2F2F80 #4040AD #6464C6 #9191D6

Accessibility & contrast

On white

8.22

#4040AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#4040AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040AD

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040AD	#FFFFFF	#000000	##FFFFFF
##4040AD	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B1

Deuteranopia (green-blind)

#004AAB

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4040ad;
/* rgb */ color: rgb(64, 64, 173);
/* oklch */ color: oklch(44.1% 0.169 276.9);

Tailwind

colors: {
  custom: {
    50: '#8175c6',
    500: '#4040ad',
    950: '#000000',
  },
}

SCSS

$custom: #4040ad;
$custom-light: #8175c6;
$custom-dark: #000000;

JSON

{
  "hex": "#4040ad",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 173
  },
  "hsl": {
    "h": 240,
    "s": 45.992,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44061,
    "c": 0.16936,
    "h": 276.9
  },
  "luminance": 0.07774
}

Semantic roles & 50–950 ramp

primary

#4040AD

secondary

#C2C287

accent

#D652D6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #4040AD

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

Preview Lab → · Contrast checker → · Palette generator →