#3F4CC7#3F4CC7

#3F4CC7 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 48.3% C 0.189 H 272.5°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CC7
RGB	rgb(63, 76, 199)
HSL	hsl(234, 55%, 51%)
HSV	hsv(234, 68%, 78%)
CMYK	cmyk(68.3%, 61.8%, 0%, 22%)
CIE-LAB	lab(38.46, 35.10, -65.61)
CIE-LCH	lch(38.46, 74.41, 298.15°)
OKLab	oklab(48.35% 0.0082 -0.1893)
OKLCH	oklch(48.35% 0.189 272.5)
XYZ	xyz(14.9397, 10.3478, 55.2318)
Luminance	0.1035 (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

#3F4CC7 #C7BA3F

analogous

#3F90C7 #3F4CC7 #763FC7

triadic

#3F4CC7 #C73F4C #4CC73F

tetradic

#3F4CC7 #C73F90 #C7BA3F #3FC776

square

#3F4CC7 #C73F90 #C7BA3F #3FC776

split-complementary

#3F4CC7 #C7763F #90C73F

monochromatic

#20276C #2D389B #3F4CC7 #6E78D5 #9EA4E3

Accessibility & contrast

On white

6.84

#3F4CC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3F4CC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4CC7

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CC7	#FFFFFF	#000000	##FFFFFF
##3F4CC7	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061CB

Deuteranopia (green-blind)

#0054C5

Tritanopia (blue-blind)

#006B82

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f4cc7;
/* rgb */ color: rgb(63, 76, 199);
/* oklch */ color: oklch(48.3% 0.189 272.5);

Tailwind

colors: {
  custom: {
    50: '#857ed9',
    500: '#3f4cc7',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cc7;
$custom-light: #857ed9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cc7",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 199
  },
  "hsl": {
    "h": 234.265,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.48347,
    "c": 0.18946,
    "h": 272.5
  },
  "luminance": 0.10349
}

Semantic roles & 50–950 ramp

primary

#3F4CC7

secondary

#CFC993

accent

#D04ADE

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4CC7

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

Preview Lab → · Contrast checker → · Palette generator →