#3F4DD9#3F4DD9

#3F4DD9 is a mid, highly saturated blue. Relative luminance 0.114; OKLCH L 50.1% C 0.211 H 271.8°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DD9
RGB	rgb(63, 77, 217)
HSL	hsl(235, 67%, 55%)
HSV	hsv(235, 71%, 85%)
CMYK	cmyk(71%, 64.5%, 0%, 14.9%)
CIE-LAB	lab(40.20, 40.70, -73.15)
CIE-LCH	lch(40.20, 83.71, 299.09°)
OKLab	oklab(50.09% 0.0065 -0.2114)
OKLCH	oklch(50.09% 0.211 271.8)
XYZ	xyz(17.2239, 11.3725, 66.9196)
Luminance	0.1137 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DD9 #D9CB3F

analogous

#3F9AD9 #3F4DD9 #7E3FD9

triadic

#3F4DD9 #D93F4D #4DD93F

tetradic

#3F4DD9 #D93F9A #D9CB3F #3FD97E

square

#3F4DD9 #D93F9A #D9CB3F #3FD97E

split-complementary

#3F4DD9 #D97E3F #9AD93F

monochromatic

#1A2484 #2431B7 #3F4DD9 #727CE3 #A5ACED

Accessibility & contrast

On white

6.41

#3F4DD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3F4DD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4DD9

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DD9	#FFFFFF	#000000	##FFFFFF
##3F4DD9	1.00	6.41	3.27	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066DD

Deuteranopia (green-blind)

#0058D6

Tritanopia (blue-blind)

#00728C

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f4dd9;
/* rgb */ color: rgb(63, 77, 217);
/* oklch */ color: oklch(50.1% 0.211 271.8);

Tailwind

colors: {
  custom: {
    50: '#897fe6',
    500: '#3f4dd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4dd9;
$custom-light: #897fe6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4dd9",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 217
  },
  "hsl": {
    "h": 234.545,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.5009,
    "c": 0.21146,
    "h": 271.8
  },
  "luminance": 0.11374
}

Semantic roles & 50–950 ramp

primary

#3F4DD9

secondary

#DAD49A

accent

#DA3EEA

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3F4DD9

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

Preview Lab → · Contrast checker → · Palette generator →