#3F4ED9#3F4ED9

#3F4ED9 is a mid, highly saturated blue. Relative luminance 0.115; OKLCH L 50.3% C 0.210 H 271.6°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3F4ED9
RGB	rgb(63, 78, 217)
HSL	hsl(234, 67%, 55%)
HSV	hsv(234, 71%, 85%)
CMYK	cmyk(71%, 64.1%, 0%, 14.9%)
CIE-LAB	lab(40.43, 40.09, -72.77)
CIE-LCH	lch(40.43, 83.08, 298.85°)
OKLab	oklab(50.26% 0.0059 -0.2102)
OKLCH	oklch(50.26% 0.21 271.6)
XYZ	xyz(17.2944, 11.5136, 66.9431)
Luminance	0.1152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4ED9 #D9CA3F

analogous

#3F9BD9 #3F4ED9 #7D3FD9

triadic

#3F4ED9 #D93F4E #4ED93F

tetradic

#3F4ED9 #D93F9B #D9CA3F #3FD97D

square

#3F4ED9 #D93F9B #D9CA3F #3FD97D

split-complementary

#3F4ED9 #D97D3F #9BD93F

monochromatic

#1A2484 #2432B7 #3F4ED9 #727DE3 #A5ACED

Accessibility & contrast

On white

6.36

#3F4ED9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3F4ED9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4ED9

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4ED9	#FFFFFF	#000000	##FFFFFF
##3F4ED9	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067DD

Deuteranopia (green-blind)

#0058D6

Tritanopia (blue-blind)

#00728C

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f4ed9;
/* rgb */ color: rgb(63, 78, 217);
/* oklch */ color: oklch(50.3% 0.210 271.6);

Tailwind

colors: {
  custom: {
    50: '#887fe6',
    500: '#3f4ed9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ed9;
$custom-light: #887fe6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ed9",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 217
  },
  "hsl": {
    "h": 234.156,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.5026,
    "c": 0.21033,
    "h": 271.6
  },
  "luminance": 0.11515
}

Semantic roles & 50–950 ramp

primary

#3F4ED9

secondary

#DAD49A

accent

#D93EEA

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3F4ED9

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

Preview Lab → · Contrast checker → · Palette generator →