#3B40DB#3B40DB

#3B40DB is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 48.0% C 0.229 H 272.4°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#3B40DB
RGB	rgb(59, 64, 219)
HSL	hsl(238, 69%, 55%)
HSV	hsv(238, 73%, 86%)
CMYK	cmyk(73.1%, 70.8%, 0%, 14.1%)
CIE-LAB	lab(37.32, 48.66, -79.04)
CIE-LCH	lch(37.32, 92.82, 301.62°)
OKLab	oklab(48% 0.0095 -0.2287)
OKLCH	oklch(48% 0.229 272.4)
XYZ	xyz(16.4189, 9.7094, 68.0129)
Luminance	0.0971 (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

#3B40DB #DBD63B

analogous

#3B90DB #3B40DB #863BDB

triadic

#3B40DB #DB3B40 #40DB3B

tetradic

#3B40DB #DB3B90 #DBD63B #3BDB86

square

#3B40DB #DB3B90 #DBD63B #3BDB86

split-complementary

#3B40DB #DB863B #90DB3B

monochromatic

#181B83 #2226B7 #3B40DB #6F72E4 #A2A5EE

Accessibility & contrast

On white

7.14

#3B40DB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#3B40DB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B40DB

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B40DB	#FFFFFF	#000000	##FFFFFF
##3B40DB	1.00	7.14	2.94	7.14
#FFFFFF	7.14	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FE0

Deuteranopia (green-blind)

#0050D8

Tritanopia (blue-blind)

#006C89

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3b40db;
/* rgb */ color: rgb(59, 64, 219);
/* oklch */ color: oklch(48.0% 0.229 272.4);

Tailwind

colors: {
  custom: {
    50: '#8876e7',
    500: '#3b40db',
    950: '#000000',
  },
}

SCSS

$custom: #3b40db;
$custom-light: #8876e7;
$custom-dark: #000000;

JSON

{
  "hex": "#3b40db",
  "rgb": {
    "r": 59,
    "g": 64,
    "b": 219
  },
  "hsl": {
    "h": 238.125,
    "s": 68.966,
    "l": 54.51
  },
  "oklch": {
    "l": 0.47998,
    "c": 0.2289,
    "h": 272.4
  },
  "luminance": 0.09711
}

Semantic roles & 50–950 ramp

primary

#3B40DB

secondary

#DBD997

accent

#E63CEC

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #3B40DB

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

Preview Lab → · Contrast checker → · Palette generator →