#3F4CCB#3F4CCB

#3F4CCB is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.7% C 0.195 H 272.4°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CCB
RGB	rgb(63, 76, 203)
HSL	hsl(234, 57%, 52%)
HSV	hsv(234, 69%, 80%)
CMYK	cmyk(69%, 62.6%, 0%, 20.4%)
CIE-LAB	lab(38.79, 36.49, -67.39)
CIE-LCH	lch(38.79, 76.64, 298.43°)
OKLab	oklab(48.69% 0.008 -0.1945)
OKLCH	oklch(48.69% 0.195 272.4)
XYZ	xyz(15.4102, 10.5360, 57.7099)
Luminance	0.1054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CCB #CBBE3F

analogous

#3F92CB #3F4CCB #783FCB

triadic

#3F4CCB #CB3F4C #4CCB3F

tetradic

#3F4CCB #CB3F92 #CBBE3F #3FCB78

square

#3F4CCB #CB3F92 #CBBE3F #3FCB78

split-complementary

#3F4CCB #CB783F #92CB3F

monochromatic

#1F2671 #2C37A1 #3F4CCB #6F79D8 #9FA6E5

Accessibility & contrast

On white

6.76

#3F4CCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3F4CCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4CCB

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CCB	#FFFFFF	#000000	##FFFFFF
##3F4CCB	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062CF

Deuteranopia (green-blind)

#0055C9

Tritanopia (blue-blind)

#006D84

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f4ccb;
/* rgb */ color: rgb(63, 76, 203);
/* oklch */ color: oklch(48.7% 0.195 272.4);

Tailwind

colors: {
  custom: {
    50: '#867edc',
    500: '#3f4ccb',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ccb;
$custom-light: #867edc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ccb",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 203
  },
  "hsl": {
    "h": 234.429,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.48691,
    "c": 0.19467,
    "h": 272.4
  },
  "luminance": 0.10537
}

Semantic roles & 50–950 ramp

primary

#3F4CCB

secondary

#D1CC94

accent

#D247E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3F4CCB

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

Preview Lab → · Contrast checker → · Palette generator →