#3F49D9#3F49D9

#3F49D9 is a mid, highly saturated blue. Relative luminance 0.108; OKLCH L 49.4% C 0.216 H 272.4°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#3F49D9
RGB	rgb(63, 73, 217)
HSL	hsl(236, 67%, 55%)
HSV	hsv(236, 71%, 85%)
CMYK	cmyk(71%, 66.4%, 0%, 14.9%)
CIE-LAB	lab(39.29, 43.12, -74.64)
CIE-LCH	lch(39.29, 86.20, 300.02°)
OKLab	oklab(49.43% 0.009 -0.2157)
OKLCH	oklch(49.43% 0.216 272.4)
XYZ	xyz(16.9526, 10.8299, 66.8291)
Luminance	0.1083 (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

#3F49D9 #D9CF3F

analogous

#3F96D9 #3F49D9 #823FD9

triadic

#3F49D9 #D93F49 #49D93F

tetradic

#3F49D9 #D93F96 #D9CF3F #3FD982

square

#3F49D9 #D93F96 #D9CF3F #3FD982

split-complementary

#3F49D9 #D9823F #96D93F

monochromatic

#1A2184 #242EB7 #3F49D9 #7279E3 #A5AAED

Accessibility & contrast

On white

6.63

#3F49D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3F49D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F49D9

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49D9	#FFFFFF	#000000	##FFFFFF
##3F49D9	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064DD

Deuteranopia (green-blind)

#0055D6

Tritanopia (blue-blind)

#00708B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f49d9;
/* rgb */ color: rgb(63, 73, 217);
/* oklch */ color: oklch(49.4% 0.216 272.4);

Tailwind

colors: {
  custom: {
    50: '#897ce6',
    500: '#3f49d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f49d9;
$custom-light: #897ce6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49d9",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 217
  },
  "hsl": {
    "h": 236.104,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.49428,
    "c": 0.21593,
    "h": 272.4
  },
  "luminance": 0.10832
}

Semantic roles & 50–950 ramp

primary

#3F49D9

secondary

#DAD69A

accent

#DF3EEA

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F49D9

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

Preview Lab → · Contrast checker → · Palette generator →