#4140AC#4140AC

#4140AC is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.0% C 0.168 H 277.4°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#4140AC
RGB	rgb(65, 64, 172)
HSL	hsl(241, 46%, 46%)
HSV	hsv(241, 63%, 67%)
CMYK	cmyk(62.2%, 62.8%, 0%, 32.5%)
CIE-LAB	lab(33.50, 33.65, -57.80)
CIE-LCH	lch(33.50, 66.89, 300.21°)
OKLab	oklab(44.05% 0.0216 -0.1664)
OKLCH	oklch(44.05% 0.168 277.4)
XYZ	xyz(11.4574, 7.7683, 39.9174)
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

#4140AC #ABAC40

analogous

#4075AC #4140AC #7740AC

triadic

#4140AC #AC4140 #40AC41

tetradic

#4140AC #AC4075 #ABAC40 #40AC77

square

#4140AC #AC4075 #ABAC40 #40AC77

split-complementary

#4140AC #AC7740 #75AC40

monochromatic

#1F1F53 #302F7F #4140AC #6564C5 #9191D6

Accessibility & contrast

On white

8.22

#4140AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#4140AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4140AC

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4140AC	#FFFFFF	#000000	##FFFFFF
##4140AC	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)

#0053AF

Deuteranopia (green-blind)

#004AAA

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4140ac;
/* rgb */ color: rgb(65, 64, 172);
/* oklch */ color: oklch(44.0% 0.168 277.4);

Tailwind

colors: {
  custom: {
    50: '#8175c6',
    500: '#4140ac',
    950: '#000000',
  },
}

SCSS

$custom: #4140ac;
$custom-light: #8175c6;
$custom-dark: #000000;

JSON

{
  "hex": "#4140ac",
  "rgb": {
    "r": 65,
    "g": 64,
    "b": 172
  },
  "hsl": {
    "h": 240.556,
    "s": 45.763,
    "l": 46.275
  },
  "oklch": {
    "l": 0.44047,
    "c": 0.1678,
    "h": 277.4
  },
  "luminance": 0.07769
}

Semantic roles & 50–950 ramp

primary

#4140AC

secondary

#C1C187

accent

#D552D4

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #4140AC

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

Preview Lab → · Contrast checker → · Palette generator →