#3F4BC9#3F4BC9

#3F4BC9 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 48.3% C 0.193 H 272.6°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BC9
RGB	rgb(63, 75, 201)
HSL	hsl(235, 56%, 52%)
HSV	hsv(235, 69%, 79%)
CMYK	cmyk(68.7%, 62.7%, 0%, 21.2%)
CIE-LAB	lab(38.38, 36.42, -66.89)
CIE-LCH	lch(38.38, 76.17, 298.57°)
OKLab	oklab(48.34% 0.0088 -0.1931)
OKLCH	oklch(48.34% 0.193 272.6)
XYZ	xyz(15.1051, 10.3045, 56.4399)
Luminance	0.1031 (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

#3F4BC9 #C9BD3F

analogous

#3F90C9 #3F4BC9 #783FC9

triadic

#3F4BC9 #C93F4B #4BC93F

tetradic

#3F4BC9 #C93F90 #C9BD3F #3FC978

square

#3F4BC9 #C93F90 #C9BD3F #3FC978

split-complementary

#3F4BC9 #C9783F #90C93F

monochromatic

#1F266F #2D369E #3F4BC9 #6F78D6 #9FA5E4

Accessibility & contrast

On white

6.86

#3F4BC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3F4BC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4BC9

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BC9	#FFFFFF	#000000	##FFFFFF
##3F4BC9	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061CD

Deuteranopia (green-blind)

#0054C7

Tritanopia (blue-blind)

#006B83

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f4bc9;
/* rgb */ color: rgb(63, 75, 201);
/* oklch */ color: oklch(48.3% 0.193 272.6);

Tailwind

colors: {
  custom: {
    50: '#857dda',
    500: '#3f4bc9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bc9;
$custom-light: #857dda;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bc9",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 201
  },
  "hsl": {
    "h": 234.783,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.48342,
    "c": 0.19326,
    "h": 272.6
  },
  "luminance": 0.10306
}

Semantic roles & 50–950 ramp

primary

#3F4BC9

secondary

#D0CB94

accent

#D248DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3F4BC9

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

Preview Lab → · Contrast checker → · Palette generator →