#3B40C5#3B40C5

#3B40C5 is a mid, highly saturated blue. Relative luminance 0.086; OKLCH L 45.9% C 0.202 H 273.5°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#3B40C5
RGB	rgb(59, 64, 197)
HSL	hsl(238, 54%, 50%)
HSV	hsv(238, 70%, 77%)
CMYK	cmyk(70.1%, 67.5%, 0%, 22.7%)
CIE-LAB	lab(35.26, 41.31, -69.70)
CIE-LCH	lch(35.26, 81.02, 300.65°)
OKLab	oklab(45.89% 0.0123 -0.2014)
OKLCH	oklch(45.89% 0.202 273.5)
XYZ	xyz(13.7117, 8.6265, 53.7550)
Luminance	0.0863 (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

#3B40C5 #C5C03B

analogous

#3B85C5 #3B40C5 #7B3BC5

triadic

#3B40C5 #C53B40 #40C53B

tetradic

#3B40C5 #C53B85 #C5C03B #3BC57B

square

#3B40C5 #C53B85 #C5C03B #3BC57B

split-complementary

#3B40C5 #C57B3B #85C53B

monochromatic

#1F2167 #2C3096 #3B40C5 #6A6ED3 #999CE1

Accessibility & contrast

On white

7.70

#3B40C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#3B40C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B40C5

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B40C5	#FFFFFF	#000000	##FFFFFF
##3B40C5	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C9

Deuteranopia (green-blind)

#004CC3

Tritanopia (blue-blind)

#00647D

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3b40c5;
/* rgb */ color: rgb(59, 64, 197);
/* oklch */ color: oklch(45.9% 0.202 273.5);

Tailwind

colors: {
  custom: {
    50: '#8475d8',
    500: '#3b40c5',
    950: '#000000',
  },
}

SCSS

$custom: #3b40c5;
$custom-light: #8475d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3b40c5",
  "rgb": {
    "r": 59,
    "g": 64,
    "b": 197
  },
  "hsl": {
    "h": 237.826,
    "s": 54.331,
    "l": 50.196
  },
  "oklch": {
    "l": 0.4589,
    "c": 0.2018,
    "h": 273.5
  },
  "luminance": 0.08628
}

Semantic roles & 50–950 ramp

primary

#3B40C5

secondary

#CDCB8F

accent

#D84ADE

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3B40C5

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

Preview Lab → · Contrast checker → · Palette generator →