#4040AF#4040AF

#4040AF is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.2% C 0.172 H 276.7°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#4040AF
RGB	rgb(64, 64, 175)
HSL	hsl(240, 46%, 47%)
HSV	hsv(240, 63%, 69%)
CMYK	cmyk(63.4%, 63.4%, 0%, 31.4%)
CIE-LAB	lab(33.67, 34.51, -59.31)
CIE-LCH	lch(33.67, 68.62, 300.19°)
OKLab	oklab(44.23% 0.0202 -0.1708)
OKLCH	oklch(44.23% 0.172 276.7)
XYZ	xyz(11.6831, 7.8510, 41.4488)
Luminance	0.0785 (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

#4040AF #AFAF40

analogous

#4078AF #4040AF #7840AF

triadic

#4040AF #AF4040 #40AF40

tetradic

#4040AF #AF4078 #AFAF40 #40AF78

square

#4040AF #AF4078 #AFAF40 #40AF78

split-complementary

#4040AF #AF7840 #78AF40

monochromatic

#1F1F55 #303082 #4040AF #6565C7 #9292D7

Accessibility & contrast

On white

8.17

#4040AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#4040AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040AF

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040AF	#FFFFFF	#000000	##FFFFFF
##4040AF	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B3

Deuteranopia (green-blind)

#004AAD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4040af;
/* rgb */ color: rgb(64, 64, 175);
/* oklch */ color: oklch(44.2% 0.172 276.7);

Tailwind

colors: {
  custom: {
    50: '#8175c8',
    500: '#4040af',
    950: '#000000',
  },
}

SCSS

$custom: #4040af;
$custom-light: #8175c8;
$custom-dark: #000000;

JSON

{
  "hex": "#4040af",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 175
  },
  "hsl": {
    "h": 240,
    "s": 46.444,
    "l": 46.863
  },
  "oklch": {
    "l": 0.44234,
    "c": 0.17204,
    "h": 276.7
  },
  "luminance": 0.07852
}

Semantic roles & 50–950 ramp

primary

#4040AF

secondary

#C3C388

accent

#D652D6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4040AF

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

Preview Lab → · Contrast checker → · Palette generator →