#3F44E0#3F44E0

#3F44E0 is a mid, highly saturated blue. Relative luminance 0.106; OKLCH L 49.3% C 0.230 H 272.8°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F44E0
RGB	rgb(63, 68, 224)
HSL	hsl(238, 72%, 56%)
HSV	hsv(238, 72%, 88%)
CMYK	cmyk(71.9%, 69.6%, 0%, 12.2%)
CIE-LAB	lab(38.85, 48.40, -79.37)
CIE-LCH	lch(38.85, 92.96, 301.37°)
OKLab	oklab(49.3% 0.0111 -0.2296)
OKLCH	oklch(49.3% 0.23 272.8)
XYZ	xyz(17.5671, 10.5710, 71.6212)
Luminance	0.1057 (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

#3F44E0 #E0DB3F

analogous

#3F95E0 #3F44E0 #8B3FE0

triadic

#3F44E0 #E03F44 #44E03F

tetradic

#3F44E0 #E03F95 #E0DB3F #3FE08B

square

#3F44E0 #E03F95 #E0DB3F #3FE08B

split-complementary

#3F44E0 #E08B3F #95E03F

monochromatic

#171B8E #1F24C2 #3F44E0 #7477E9 #A8ABF1

Accessibility & contrast

On white

6.74

#3F44E0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3F44E0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F44E0

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F44E0	#FFFFFF	#000000	##FFFFFF
##3F44E0	1.00	6.74	3.11	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063E5

Deuteranopia (green-blind)

#0054DD

Tritanopia (blue-blind)

#006F8D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f44e0;
/* rgb */ color: rgb(63, 68, 224);
/* oklch */ color: oklch(49.3% 0.230 272.8);

Tailwind

colors: {
  custom: {
    50: '#8b79eb',
    500: '#3f44e0',
    950: '#000000',
  },
}

SCSS

$custom: #3f44e0;
$custom-light: #8b79eb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f44e0",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 224
  },
  "hsl": {
    "h": 238.137,
    "s": 72.197,
    "l": 56.275
  },
  "oklch": {
    "l": 0.49301,
    "c": 0.22985,
    "h": 272.8
  },
  "luminance": 0.10573
}

Semantic roles & 50–950 ramp

primary

#3F44E0

secondary

#DFDC9C

accent

#E939EF

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #3F44E0

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

Preview Lab → · Contrast checker → · Palette generator →