#3B40BF#3B40BF

#3B40BF is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.3% C 0.194 H 273.8°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#3B40BF
RGB	rgb(59, 64, 191)
HSL	hsl(238, 53%, 49%)
HSV	hsv(238, 69%, 75%)
CMYK	cmyk(69.1%, 66.5%, 0%, 25.1%)
CIE-LAB	lab(34.72, 39.26, -67.07)
CIE-LCH	lch(34.72, 77.72, 300.34°)
OKLab	oklab(45.33% 0.0129 -0.1937)
OKLCH	oklch(45.33% 0.194 273.8)
XYZ	xyz(13.0379, 8.3570, 50.2061)
Luminance	0.0836 (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

#3B40BF #BFBA3B

analogous

#3B82BF #3B40BF #783BBF

triadic

#3B40BF #BF3B40 #40BF3B

tetradic

#3B40BF #BF3B82 #BFBA3B #3BBF78

square

#3B40BF #BF3B82 #BFBA3B #3BBF78

split-complementary

#3B40BF #BF783B #82BF3B

monochromatic

#1E2161 #2D3090 #3B40BF #676BD0 #9699DF

Accessibility & contrast

On white

7.86

#3B40BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3B40BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B40BF

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B40BF	#FFFFFF	#000000	##FFFFFF
##3B40BF	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C3

Deuteranopia (green-blind)

#004CBD

Tritanopia (blue-blind)

#00627A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3b40bf;
/* rgb */ color: rgb(59, 64, 191);
/* oklch */ color: oklch(45.3% 0.194 273.8);

Tailwind

colors: {
  custom: {
    50: '#8275d3',
    500: '#3b40bf',
    950: '#000000',
  },
}

SCSS

$custom: #3b40bf;
$custom-light: #8275d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3b40bf",
  "rgb": {
    "r": 59,
    "g": 64,
    "b": 191
  },
  "hsl": {
    "h": 237.727,
    "s": 52.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.45334,
    "c": 0.19417,
    "h": 273.8
  },
  "luminance": 0.08358
}

Semantic roles & 50–950 ramp

primary

#3B40BF

secondary

#CAC88C

accent

#D74CDC

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3B40BF

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

Preview Lab → · Contrast checker → · Palette generator →