#3940DD#3940DD

#3940DD is a mid, highly saturated blue. Relative luminance 0.098; OKLCH L 48.1% C 0.232 H 271.8°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#3940DD
RGB	rgb(57, 64, 221)
HSL	hsl(237, 71%, 55%)
HSV	hsv(237, 74%, 87%)
CMYK	cmyk(74.2%, 71%, 0%, 13.3%)
CIE-LAB	lab(37.40, 49.13, -80.05)
CIE-LCH	lch(37.40, 93.93, 301.54°)
OKLab	oklab(48.09% 0.0071 -0.2317)
OKLCH	oklch(48.09% 0.232 271.8)
XYZ	xyz(16.5675, 9.7554, 69.4024)
Luminance	0.0976 (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

#3940DD #DDD639

analogous

#3992DD #3940DD #8439DD

triadic

#3940DD #DD3940 #40DD39

tetradic

#3940DD #DD3992 #DDD639 #39DD84

square

#3940DD #DD3992 #DDD639 #39DD84

split-complementary

#3940DD #DD8439 #92DD39

monochromatic

#171B85 #2026B9 #3940DD #6D72E6 #A1A5EF

Accessibility & contrast

On white

7.12

#3940DD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3940DD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940DD

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940DD	#FFFFFF	#000000	##FFFFFF
##3940DD	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060E2

Deuteranopia (green-blind)

#0050DA

Tritanopia (blue-blind)

#006C8A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3940dd;
/* rgb */ color: rgb(57, 64, 221);
/* oklch */ color: oklch(48.1% 0.232 271.8);

Tailwind

colors: {
  custom: {
    50: '#8876e9',
    500: '#3940dd',
    950: '#000000',
  },
}

SCSS

$custom: #3940dd;
$custom-light: #8876e9;
$custom-dark: #000000;

JSON

{
  "hex": "#3940dd",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 221
  },
  "hsl": {
    "h": 237.439,
    "s": 70.69,
    "l": 54.51
  },
  "oklch": {
    "l": 0.48087,
    "c": 0.2318,
    "h": 271.8
  },
  "luminance": 0.09757
}

Semantic roles & 50–950 ramp

primary

#3940DD

secondary

#DCD996

accent

#E63AED

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #3940DD

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

Preview Lab → · Contrast checker → · Palette generator →