#4040AA#4040AA

#4040AA is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.8% C 0.165 H 277.1°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#4040AA
RGB	rgb(64, 64, 170)
HSL	hsl(240, 45%, 46%)
HSV	hsv(240, 62%, 67%)
CMYK	cmyk(62.4%, 62.4%, 0%, 33.3%)
CIE-LAB	lab(33.26, 32.81, -56.99)
CIE-LCH	lch(33.26, 65.76, 299.93°)
OKLab	oklab(43.81% 0.0205 -0.164)
OKLCH	oklch(43.81% 0.165 277.1)
XYZ	xyz(11.2011, 7.6582, 38.9103)
Luminance	0.0766 (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

#4040AA #AAAA40

analogous

#4075AA #4040AA #7540AA

triadic

#4040AA #AA4040 #40AA40

tetradic

#4040AA #AA4075 #AAAA40 #40AA75

square

#4040AA #AA4075 #AAAA40 #40AA75

split-complementary

#4040AA #AA7540 #75AA40

monochromatic

#1F1F51 #2F2F7E #4040AA #6363C4 #8F8FD5

Accessibility & contrast

On white

8.29

#4040AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#4040AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040AA

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040AA	#FFFFFF	#000000	##FFFFFF
##4040AA	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AD

Deuteranopia (green-blind)

#004AA8

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4040aa;
/* rgb */ color: rgb(64, 64, 170);
/* oklch */ color: oklch(43.8% 0.165 277.1);

Tailwind

colors: {
  custom: {
    50: '#8075c4',
    500: '#4040aa',
    950: '#000000',
  },
}

SCSS

$custom: #4040aa;
$custom-light: #8075c4;
$custom-dark: #000000;

JSON

{
  "hex": "#4040aa",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 170
  },
  "hsl": {
    "h": 240,
    "s": 45.299,
    "l": 45.882
  },
  "oklch": {
    "l": 0.43805,
    "c": 0.16533,
    "h": 277.1
  },
  "luminance": 0.07659
}

Semantic roles & 50–950 ramp

primary

#4040AA

secondary

#C0C086

accent

#D553D5

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #4040AA

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

Preview Lab → · Contrast checker → · Palette generator →