#3F4DDA#3F4DDA

#3F4DDA is a mid, highly saturated blue. Relative luminance 0.114; OKLCH L 50.2% C 0.213 H 271.7°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DDA
RGB	rgb(63, 77, 218)
HSL	hsl(235, 68%, 55%)
HSV	hsv(235, 71%, 85%)
CMYK	cmyk(71.1%, 64.7%, 0%, 14.5%)
CIE-LAB	lab(40.29, 41.04, -73.58)
CIE-LCH	lch(40.29, 84.25, 299.15°)
OKLab	oklab(50.18% 0.0064 -0.2126)
OKLCH	oklch(50.18% 0.213 271.7)
XYZ	xyz(17.3544, 11.4247, 67.6067)
Luminance	0.1143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DDA #DACC3F

analogous

#3F9ADA #3F4DDA #7F3FDA

triadic

#3F4DDA #DA3F4D #4DDA3F

tetradic

#3F4DDA #DA3F9A #DACC3F #3FDA7F

square

#3F4DDA #DA3F9A #DACC3F #3FDA7F

split-complementary

#3F4DDA #DA7F3F #9ADA3F

monochromatic

#1A2385 #2431B8 #3F4DDA #727DE4 #A6ACEE

Accessibility & contrast

On white

6.39

#3F4DDA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3F4DDA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4DDA

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DDA	#FFFFFF	#000000	##FFFFFF
##3F4DDA	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066DE

Deuteranopia (green-blind)

#0058D7

Tritanopia (blue-blind)

#00728D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f4dda;
/* rgb */ color: rgb(63, 77, 218);
/* oklch */ color: oklch(50.2% 0.213 271.7);

Tailwind

colors: {
  custom: {
    50: '#897fe7',
    500: '#3f4dda',
    950: '#000000',
  },
}

SCSS

$custom: #3f4dda;
$custom-light: #897fe7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4dda",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 218
  },
  "hsl": {
    "h": 234.581,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.50179,
    "c": 0.21273,
    "h": 271.7
  },
  "luminance": 0.11426
}

Semantic roles & 50–950 ramp

primary

#3F4DDA

secondary

#DBD59A

accent

#DB3DEB

background

#F9F7FE

surface

#F1EEFD

border

#CBC9D5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3F4DDA

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

Preview Lab → · Contrast checker → · Palette generator →