#3B40BE#3B40BE

#3B40BE is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.2% C 0.193 H 273.9°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#3B40BE
RGB	rgb(59, 64, 190)
HSL	hsl(238, 53%, 49%)
HSV	hsv(238, 69%, 75%)
CMYK	cmyk(68.9%, 66.3%, 0%, 25.5%)
CIE-LAB	lab(34.63, 38.92, -66.63)
CIE-LCH	lch(34.63, 77.17, 300.29°)
OKLab	oklab(45.24% 0.013 -0.1924)
OKLCH	oklch(45.24% 0.193 273.9)
XYZ	xyz(12.9282, 8.3131, 49.6285)
Luminance	0.0831 (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

#3B40BE #BEB93B

analogous

#3B82BE #3B40BE #783BBE

triadic

#3B40BE #BE3B40 #40BE3B

tetradic

#3B40BE #BE3B82 #BEB93B #3BBE78

square

#3B40BE #BE3B82 #BEB93B #3BBE78

split-complementary

#3B40BE #BE783B #82BE3B

monochromatic

#1E2161 #2C308F #3B40BE #676BD0 #9598DE

Accessibility & contrast

On white

7.89

#3B40BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3B40BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B40BE

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B40BE	#FFFFFF	#000000	##FFFFFF
##3B40BE	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C2

Deuteranopia (green-blind)

#004BBC

Tritanopia (blue-blind)

#006179

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3b40be;
/* rgb */ color: rgb(59, 64, 190);
/* oklch */ color: oklch(45.2% 0.193 273.9);

Tailwind

colors: {
  custom: {
    50: '#8275d3',
    500: '#3b40be',
    950: '#000000',
  },
}

SCSS

$custom: #3b40be;
$custom-light: #8275d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3b40be",
  "rgb": {
    "r": 59,
    "g": 64,
    "b": 190
  },
  "hsl": {
    "h": 237.71,
    "s": 52.61,
    "l": 48.824
  },
  "oklch": {
    "l": 0.45242,
    "c": 0.19288,
    "h": 273.9
  },
  "luminance": 0.08314
}

Semantic roles & 50–950 ramp

primary

#3B40BE

secondary

#CAC78B

accent

#D74CDC

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3B40BE

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

Preview Lab → · Contrast checker → · Palette generator →