#3F55C2#3F55C2

#3F55C2 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.6% C 0.172 H 270.3°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#3F55C2
RGB	rgb(63, 85, 194)
HSL	hsl(230, 52%, 50%)
HSV	hsv(230, 68%, 76%)
CMYK	cmyk(67.5%, 56.2%, 0%, 23.9%)
CIE-LAB	lab(40.32, 27.62, -59.67)
CIE-LCH	lch(40.32, 65.75, 294.84°)
OKLab	oklab(49.61% 0.0009 -0.1717)
OKLCH	oklch(49.61% 0.172 270.3)
XYZ	xyz(15.0327, 11.4474, 52.4458)
Luminance	0.1145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F55C2 #C2AC3F

analogous

#3F96C2 #3F55C2 #6B3FC2

triadic

#3F55C2 #C23F55 #55C23F

tetradic

#3F55C2 #C23F96 #C2AC3F #3FC26B

square

#3F55C2 #C23F96 #C2AC3F #3FC26B

split-complementary

#3F55C2 #C26B3F #96C23F

monochromatic

#202C66 #2F4095 #3F55C2 #6D7ED1 #9CA7E0

Accessibility & contrast

On white

6.38

#3F55C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3F55C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F55C2

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F55C2	#FFFFFF	#000000	##FFFFFF
##3F55C2	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065C6

Deuteranopia (green-blind)

#0059C0

Tritanopia (blue-blind)

#006F83

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f55c2;
/* rgb */ color: rgb(63, 85, 194);
/* oklch */ color: oklch(49.6% 0.172 270.3);

Tailwind

colors: {
  custom: {
    50: '#8384d5',
    500: '#3f55c2',
    950: '#000000',
  },
}

SCSS

$custom: #3f55c2;
$custom-light: #8384d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f55c2",
  "rgb": {
    "r": 63,
    "g": 85,
    "b": 194
  },
  "hsl": {
    "h": 229.924,
    "s": 51.779,
    "l": 50.392
  },
  "oklch": {
    "l": 0.49611,
    "c": 0.17172,
    "h": 270.3
  },
  "luminance": 0.11449
}

Semantic roles & 50–950 ramp

primary

#3F55C2

secondary

#CCC291

accent

#C34DDB

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F55C2

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

Preview Lab → · Contrast checker → · Palette generator →