#3F4BD8#3F4BD8

#3F4BD8 is a mid, highly saturated blue. Relative luminance 0.110; OKLCH L 49.7% C 0.212 H 272.1°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BD8
RGB	rgb(63, 75, 216)
HSL	hsl(235, 66%, 55%)
HSV	hsv(235, 71%, 85%)
CMYK	cmyk(70.8%, 65.3%, 0%, 15.3%)
CIE-LAB	lab(39.66, 41.57, -73.47)
CIE-LCH	lch(39.66, 84.41, 299.51°)
OKLab	oklab(49.67% 0.0079 -0.2123)
OKLCH	oklch(49.67% 0.212 272.1)
XYZ	xyz(16.9565, 11.0451, 66.1907)
Luminance	0.1105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.45

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4BD8 #D8CC3F

analogous

#3F98D8 #3F4BD8 #7F3FD8

triadic

#3F4BD8 #D83F4B #4BD83F

tetradic

#3F4BD8 #D83F98 #D8CC3F #3FD87F

square

#3F4BD8 #D83F98 #D8CC3F #3FD87F

split-complementary

#3F4BD8 #D87F3F #98D83F

monochromatic

#1A2382 #2530B5 #3F4BD8 #727BE2 #A5AAED

Accessibility & contrast

On white

6.54

#3F4BD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3F4BD8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4BD8

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BD8	#FFFFFF	#000000	##FFFFFF
##3F4BD8	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065DC

Deuteranopia (green-blind)

#0056D5

Tritanopia (blue-blind)

#00708B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f4bd8;
/* rgb */ color: rgb(63, 75, 216);
/* oklch */ color: oklch(49.7% 0.212 272.1);

Tailwind

colors: {
  custom: {
    50: '#887de5',
    500: '#3f4bd8',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bd8;
$custom-light: #887de5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bd8",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 216
  },
  "hsl": {
    "h": 235.294,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.49666,
    "c": 0.21246,
    "h": 272.1
  },
  "luminance": 0.11047
}

Semantic roles & 50–950 ramp

primary

#3F4BD8

secondary

#DAD599

accent

#DC3FE9

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3F4BD8

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

Preview Lab → · Contrast checker → · Palette generator →