#3F65CA#3F65CA

#3F65CA is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.4% C 0.163 H 265.6°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#3F65CA
RGB	rgb(63, 101, 202)
HSL	hsl(224, 57%, 52%)
HSV	hsv(224, 69%, 79%)
CMYK	cmyk(68.8%, 50%, 0%, 20.8%)
CIE-LAB	lab(45.12, 20.25, -56.54)
CIE-LCH	lch(45.12, 60.05, 289.70°)
OKLab	oklab(53.41% -0.0124 -0.1623)
OKLCH	oklch(53.41% 0.163 265.6)
XYZ	xyz(17.3605, 14.6267, 57.7740)
Luminance	0.1463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65CA #CAA43F

analogous

#3FABCA #3F65CA #5F3FCA

triadic

#3F65CA #CA3F65 #65CA3F

tetradic

#3F65CA #CA3FAB #CAA43F #3FCA5F

square

#3F65CA #CA3FAB #CAA43F #3FCA5F

split-complementary

#3F65CA #CA5F3F #ABCA3F

monochromatic

#1F3570 #2C4CA0 #3F65CA #6F8BD7 #9FB2E4

Accessibility & contrast

On white

5.35

#3F65CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#3F65CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65CA

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65CA	#FFFFFF	#000000	##FFFFFF
##3F65CA	1.00	5.35	3.93	5.35
#FFFFFF	5.35	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A71CE

Deuteranopia (green-blind)

#0065C8

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f65ca;
/* rgb */ color: rgb(63, 101, 202);
/* oklch */ color: oklch(53.4% 0.163 265.6);

Tailwind

colors: {
  custom: {
    50: '#8490db',
    500: '#3f65ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f65ca;
$custom-light: #8490db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65ca",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 202
  },
  "hsl": {
    "h": 223.597,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.53408,
    "c": 0.16276,
    "h": 265.6
  },
  "luminance": 0.14628
}

Semantic roles & 50–950 ramp

primary

#3F65CA

secondary

#D1C094

accent

#B648E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F65CA

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

Preview Lab → · Contrast checker → · Palette generator →