#3F64C1#3F64C1

#3F64C1 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.6% C 0.152 H 265.2°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F64C1
RGB	rgb(63, 100, 193)
HSL	hsl(223, 51%, 50%)
HSV	hsv(223, 67%, 76%)
CMYK	cmyk(67.4%, 48.2%, 0%, 24.3%)
CIE-LAB	lab(44.26, 17.64, -52.72)
CIE-LCH	lch(44.26, 55.60, 288.50°)
OKLab	oklab(52.57% -0.0126 -0.1511)
OKLCH	oklch(52.57% 0.152 265.2)
XYZ	xyz(16.2294, 14.0198, 52.2925)
Luminance	0.1402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64C1 #C19C3F

analogous

#3FA5C1 #3F64C1 #5B3FC1

triadic

#3F64C1 #C13F64 #64C13F

tetradic

#3F64C1 #C13FA5 #C19C3F #3FC15B

square

#3F64C1 #C13FA5 #C19C3F #3FC15B

split-complementary

#3F64C1 #C15B3F #A5C13F

monochromatic

#213465 #304C93 #3F64C1 #6D89D0 #9CAFDF

Accessibility & contrast

On white

5.52

#3F64C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#3F64C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64C1

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64C1	#FFFFFF	#000000	##FFFFFF
##3F64C1	1.00	5.52	3.80	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#326FC4

Deuteranopia (green-blind)

#1363BF

Tritanopia (blue-blind)

#007A89

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f64c1;
/* rgb */ color: rgb(63, 100, 193);
/* oklch */ color: oklch(52.6% 0.152 265.2);

Tailwind

colors: {
  custom: {
    50: '#828fd4',
    500: '#3f64c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f64c1;
$custom-light: #828fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64c1",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 193
  },
  "hsl": {
    "h": 222.923,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.52567,
    "c": 0.1516,
    "h": 265.2
  },
  "luminance": 0.14021
}

Semantic roles & 50–950 ramp

primary

#3F64C1

secondary

#CBBA91

accent

#B24DDB

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F64C1

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

Preview Lab → · Contrast checker → · Palette generator →