#3F4CD9#3F4CD9

#3F4CD9 is a mid, highly saturated blue. Relative luminance 0.112; OKLCH L 49.9% C 0.213 H 271.9°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CD9
RGB	rgb(63, 76, 217)
HSL	hsl(235, 67%, 55%)
HSV	hsv(235, 71%, 85%)
CMYK	cmyk(71%, 65%, 0%, 14.9%)
CIE-LAB	lab(39.97, 41.31, -73.52)
CIE-LCH	lch(39.97, 84.33, 299.33°)
OKLab	oklab(49.92% 0.0072 -0.2125)
OKLCH	oklch(49.92% 0.213 271.9)
XYZ	xyz(17.1545, 11.2337, 66.8964)
Luminance	0.1124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CD9 #D9CC3F

analogous

#3F99D9 #3F4CD9 #7F3FD9

triadic

#3F4CD9 #D93F4C #4CD93F

tetradic

#3F4CD9 #D93F99 #D9CC3F #3FD97F

square

#3F4CD9 #D93F99 #D9CC3F #3FD97F

split-complementary

#3F4CD9 #D97F3F #99D93F

monochromatic

#1A2384 #2431B7 #3F4CD9 #727CE3 #A5ABED

Accessibility & contrast

On white

6.47

#3F4CD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#3F4CD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4CD9

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CD9	#FFFFFF	#000000	##FFFFFF
##3F4CD9	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065DD

Deuteranopia (green-blind)

#0057D6

Tritanopia (blue-blind)

#00718C

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f4cd9;
/* rgb */ color: rgb(63, 76, 217);
/* oklch */ color: oklch(49.9% 0.213 271.9);

Tailwind

colors: {
  custom: {
    50: '#897ee6',
    500: '#3f4cd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cd9;
$custom-light: #897ee6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cd9",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 217
  },
  "hsl": {
    "h": 234.935,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.49923,
    "c": 0.21259,
    "h": 271.9
  },
  "luminance": 0.11235
}

Semantic roles & 50–950 ramp

primary

#3F4CD9

secondary

#DAD59A

accent

#DB3EEA

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3F4CD9

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

Preview Lab → · Contrast checker → · Palette generator →