#3F4FC5#3F4FC5

#3F4FC5 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.7% C 0.183 H 271.8°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FC5
RGB	rgb(63, 79, 197)
HSL	hsl(233, 54%, 51%)
HSV	hsv(233, 68%, 77%)
CMYK	cmyk(68%, 59.9%, 0%, 22.7%)
CIE-LAB	lab(39.03, 32.51, -63.51)
CIE-LCH	lch(39.03, 71.35, 297.11°)
OKLab	oklab(48.72% 0.0059 -0.1831)
OKLCH	oklch(48.72% 0.183 271.8)
XYZ	xyz(14.9205, 10.6785, 54.0873)
Luminance	0.1068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FC5 #C5B53F

analogous

#3F92C5 #3F4FC5 #723FC5

triadic

#3F4FC5 #C53F4F #4FC53F

tetradic

#3F4FC5 #C53F92 #C5B53F #3FC572

square

#3F4FC5 #C53F92 #C5B53F #3FC572

split-complementary

#3F4FC5 #C5723F #92C53F

monochromatic

#20296A #2E3B99 #3F4FC5 #6E7AD3 #9DA5E1

Accessibility & contrast

On white

6.70

#3F4FC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3F4FC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FC5

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FC5	#FFFFFF	#000000	##FFFFFF
##3F4FC5	1.00	6.70	3.14	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C9

Deuteranopia (green-blind)

#0056C3

Tritanopia (blue-blind)

#006C82

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4fc5;
/* rgb */ color: rgb(63, 79, 197);
/* oklch */ color: oklch(48.7% 0.183 271.8);

Tailwind

colors: {
  custom: {
    50: '#8480d7',
    500: '#3f4fc5',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fc5;
$custom-light: #8480d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fc5",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 197
  },
  "hsl": {
    "h": 232.836,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.48722,
    "c": 0.18318,
    "h": 271.8
  },
  "luminance": 0.1068
}

Semantic roles & 50–950 ramp

primary

#3F4FC5

secondary

#CEC692

accent

#CC4BDD

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4FC5

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

Preview Lab → · Contrast checker → · Palette generator →