#3F4CBC#3F4CBC

#3F4CBC is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.4% C 0.175 H 272.8°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CBC
RGB	rgb(63, 76, 188)
HSL	hsl(234, 50%, 49%)
HSV	hsv(234, 66%, 74%)
CMYK	cmyk(66.5%, 59.6%, 0%, 26.3%)
CIE-LAB	lab(37.58, 31.26, -60.62)
CIE-LCH	lch(37.58, 68.20, 297.28°)
OKLab	oklab(47.43% 0.0084 -0.1746)
OKLCH	oklch(47.43% 0.175 272.8)
XYZ	xyz(13.7084, 9.8552, 48.7470)
Luminance	0.0986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CBC #BCAF3F

analogous

#3F8BBC #3F4CBC #713FBC

triadic

#3F4CBC #BC3F4C #4CBC3F

tetradic

#3F4CBC #BC3F8B #BCAF3F #3FBC71

square

#3F4CBC #BC3F8B #BCAF3F #3FBC71

split-complementary

#3F4CBC #BC713F #8BBC3F

monochromatic

#202760 #30398E #3F4CBC #6B75CD #99A0DD

Accessibility & contrast

On white

7.07

#3F4CBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3F4CBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CBC

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CBC	#FFFFFF	#000000	##FFFFFF
##3F4CBC	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC0

Deuteranopia (green-blind)

#0053BA

Tritanopia (blue-blind)

#00687C

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4cbc;
/* rgb */ color: rgb(63, 76, 188);
/* oklch */ color: oklch(47.4% 0.175 272.8);

Tailwind

colors: {
  custom: {
    50: '#837ed1',
    500: '#3f4cbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cbc;
$custom-light: #837ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cbc",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 188
  },
  "hsl": {
    "h": 233.76,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.47425,
    "c": 0.17482,
    "h": 272.8
  },
  "luminance": 0.09856
}

Semantic roles & 50–950 ramp

primary

#3F4CBC

secondary

#C9C28E

accent

#CB4ED9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F4CBC

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

Preview Lab → · Contrast checker → · Palette generator →