#4140BB#4140BB

#4140BB is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.4% C 0.188 H 276.2°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#4140BB
RGB	rgb(65, 64, 187)
HSL	hsl(240, 49%, 49%)
HSV	hsv(240, 66%, 73%)
CMYK	cmyk(65.2%, 65.8%, 0%, 26.7%)
CIE-LAB	lab(34.76, 38.70, -64.64)
CIE-LCH	lch(34.76, 75.34, 300.91°)
OKLab	oklab(45.36% 0.0204 -0.1864)
OKLCH	oklch(45.36% 0.188 276.2)
XYZ	xyz(12.9801, 8.3774, 47.9370)
Luminance	0.0838 (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

#4140BB #BABB40

analogous

#407DBB #4140BB #7F40BB

triadic

#4140BB #BB4140 #40BB41

tetradic

#4140BB #BB407D #BABB40 #40BB7F

square

#4140BB #BB407D #BABB40 #40BB7F

split-complementary

#4140BB #BB7F40 #7DBB40

monochromatic

#212160 #31308D #4140BB #6C6CCD #9A99DC

Accessibility & contrast

On white

7.85

#4140BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4140BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4140BB

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4140BB	#FFFFFF	#000000	##FFFFFF
##4140BB	1.00	7.85	2.68	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BF

Deuteranopia (green-blind)

#004CB9

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4140bb;
/* rgb */ color: rgb(65, 64, 187);
/* oklch */ color: oklch(45.4% 0.188 276.2);

Tailwind

colors: {
  custom: {
    50: '#8475d0',
    500: '#4140bb',
    950: '#000000',
  },
}

SCSS

$custom: #4140bb;
$custom-light: #8475d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4140bb",
  "rgb": {
    "r": 65,
    "g": 64,
    "b": 187
  },
  "hsl": {
    "h": 240.488,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45359,
    "c": 0.18756,
    "h": 276.2
  },
  "luminance": 0.08378
}

Semantic roles & 50–950 ramp

primary

#4140BB

secondary

#C8C88F

accent

#D94FD7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4140BB

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

Preview Lab → · Contrast checker → · Palette generator →