#3F54C2#3F54C2

#3F54C2 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.4% C 0.173 H 270.6°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#3F54C2
RGB	rgb(63, 84, 194)
HSL	hsl(230, 52%, 50%)
HSV	hsv(230, 68%, 76%)
CMYK	cmyk(67.5%, 56.7%, 0%, 23.9%)
CIE-LAB	lab(40.07, 28.26, -60.08)
CIE-LCH	lch(40.07, 66.40, 295.19°)
OKLab	oklab(49.42% 0.0018 -0.173)
OKLCH	oklch(49.42% 0.173 270.6)
XYZ	xyz(14.9545, 11.2910, 52.4198)
Luminance	0.1129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F54C2 #C2AD3F

analogous

#3F95C2 #3F54C2 #6C3FC2

triadic

#3F54C2 #C23F54 #54C23F

tetradic

#3F54C2 #C23F95 #C2AD3F #3FC26C

square

#3F54C2 #C23F95 #C2AD3F #3FC26C

split-complementary

#3F54C2 #C26C3F #95C23F

monochromatic

#202C66 #2F3F95 #3F54C2 #6D7DD1 #9CA7E0

Accessibility & contrast

On white

6.44

#3F54C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#3F54C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F54C2

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F54C2	#FFFFFF	#000000	##FFFFFF
##3F54C2	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065C6

Deuteranopia (green-blind)

#0059C0

Tritanopia (blue-blind)

#006F83

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f54c2;
/* rgb */ color: rgb(63, 84, 194);
/* oklch */ color: oklch(49.4% 0.173 270.6);

Tailwind

colors: {
  custom: {
    50: '#8383d5',
    500: '#3f54c2',
    950: '#000000',
  },
}

SCSS

$custom: #3f54c2;
$custom-light: #8383d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f54c2",
  "rgb": {
    "r": 63,
    "g": 84,
    "b": 194
  },
  "hsl": {
    "h": 230.382,
    "s": 51.779,
    "l": 50.392
  },
  "oklch": {
    "l": 0.49418,
    "c": 0.17297,
    "h": 270.6
  },
  "luminance": 0.11292
}

Semantic roles & 50–950 ramp

primary

#3F54C2

secondary

#CCC291

accent

#C44DDB

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F54C2

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

Preview Lab → · Contrast checker → · Palette generator →