#3940DB#3940DB

#3940DB is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 47.9% C 0.229 H 271.8°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#3940DB
RGB	rgb(57, 64, 219)
HSL	hsl(237, 69%, 54%)
HSV	hsv(237, 74%, 86%)
CMYK	cmyk(74%, 70.8%, 0%, 14.1%)
CIE-LAB	lab(37.21, 48.47, -79.23)
CIE-LCH	lch(37.21, 92.88, 301.46°)
OKLab	oklab(47.89% 0.0074 -0.2293)
OKLCH	oklch(47.89% 0.229 271.8)
XYZ	xyz(16.3026, 9.6494, 68.0074)
Luminance	0.0965 (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

#3940DB #DBD439

analogous

#3991DB #3940DB #8339DB

triadic

#3940DB #DB3940 #40DB39

tetradic

#3940DB #DB3991 #DBD439 #39DB83

square

#3940DB #DB3991 #DBD439 #39DB83

split-complementary

#3940DB #DB8339 #91DB39

monochromatic

#181C82 #2127B6 #3940DB #6D72E4 #A1A4EE

Accessibility & contrast

On white

7.17

#3940DB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#3940DB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940DB

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940DB	#FFFFFF	#000000	##FFFFFF
##3940DB	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	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: #3940db;
/* rgb */ color: rgb(57, 64, 219);
/* oklch */ color: oklch(47.9% 0.229 271.8);

Tailwind

colors: {
  custom: {
    50: '#8876e7',
    500: '#3940db',
    950: '#000000',
  },
}

SCSS

$custom: #3940db;
$custom-light: #8876e7;
$custom-dark: #000000;

JSON

{
  "hex": "#3940db",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 219
  },
  "hsl": {
    "h": 237.407,
    "s": 69.231,
    "l": 54.118
  },
  "oklch": {
    "l": 0.47889,
    "c": 0.2294,
    "h": 271.8
  },
  "luminance": 0.09651
}

Semantic roles & 50–950 ramp

primary

#3940DB

secondary

#DAD795

accent

#E43CEC

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #3940DB

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

Preview Lab → · Contrast checker → · Palette generator →