#3F4FD9#3F4FD9

#3F4FD9 is a mid, highly saturated blue. Relative luminance 0.117; OKLCH L 50.4% C 0.209 H 271.4°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FD9
RGB	rgb(63, 79, 217)
HSL	hsl(234, 67%, 55%)
HSV	hsv(234, 71%, 85%)
CMYK	cmyk(71%, 63.6%, 0%, 14.9%)
CIE-LAB	lab(40.67, 39.47, -72.39)
CIE-LCH	lch(40.67, 82.45, 298.60°)
OKLab	oklab(50.43% 0.0052 -0.2091)
OKLCH	oklch(50.43% 0.209 271.4)
XYZ	xyz(17.3660, 11.6567, 66.9670)
Luminance	0.1166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FD9 #D9C93F

analogous

#3F9CD9 #3F4FD9 #7C3FD9

triadic

#3F4FD9 #D93F4F #4FD93F

tetradic

#3F4FD9 #D93F9C #D9C93F #3FD97C

square

#3F4FD9 #D93F9C #D9C93F #3FD97C

split-complementary

#3F4FD9 #D97C3F #9CD93F

monochromatic

#1A2584 #2433B7 #3F4FD9 #727EE3 #A5ADED

Accessibility & contrast

On white

6.30

#3F4FD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#3F4FD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FD9

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FD9	#FFFFFF	#000000	##FFFFFF
##3F4FD9	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067DD

Deuteranopia (green-blind)

#0059D6

Tritanopia (blue-blind)

#00738D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f4fd9;
/* rgb */ color: rgb(63, 79, 217);
/* oklch */ color: oklch(50.4% 0.209 271.4);

Tailwind

colors: {
  custom: {
    50: '#8880e6',
    500: '#3f4fd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fd9;
$custom-light: #8880e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fd9",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 217
  },
  "hsl": {
    "h": 233.766,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.5043,
    "c": 0.20918,
    "h": 271.4
  },
  "luminance": 0.11658
}

Semantic roles & 50–950 ramp

primary

#3F4FD9

secondary

#DAD49A

accent

#D83EEA

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3F4FD9

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

Preview Lab → · Contrast checker → · Palette generator →