#3F44D9#3F44D9

#3F44D9 is a mid, highly saturated blue. Relative luminance 0.102; OKLCH L 48.6% C 0.221 H 273.1°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F44D9
RGB	rgb(63, 68, 217)
HSL	hsl(238, 67%, 55%)
HSV	hsv(238, 71%, 85%)
CMYK	cmyk(71%, 68.7%, 0%, 14.9%)
CIE-LAB	lab(38.20, 46.08, -76.43)
CIE-LCH	lch(38.20, 89.25, 301.09°)
OKLab	oklab(48.64% 0.012 -0.221)
OKLCH	oklch(48.64% 0.221 273.1)
XYZ	xyz(16.6372, 10.1991, 66.7240)
Luminance	0.1020 (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

#3F44D9 #D9D43F

analogous

#3F91D9 #3F44D9 #873FD9

triadic

#3F44D9 #D93F44 #44D93F

tetradic

#3F44D9 #D93F91 #D9D43F #3FD987

square

#3F44D9 #D93F91 #D9D43F #3FD987

split-complementary

#3F44D9 #D9873F #91D93F

monochromatic

#1A1D84 #2429B7 #3F44D9 #7276E3 #A5A8ED

Accessibility & contrast

On white

6.91

#3F44D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#3F44D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F44D9

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F44D9	#FFFFFF	#000000	##FFFFFF
##3F44D9	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061DE

Deuteranopia (green-blind)

#0053D6

Tritanopia (blue-blind)

#006D89

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f44d9;
/* rgb */ color: rgb(63, 68, 217);
/* oklch */ color: oklch(48.6% 0.221 273.1);

Tailwind

colors: {
  custom: {
    50: '#8979e6',
    500: '#3f44d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f44d9;
$custom-light: #8979e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f44d9",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 217
  },
  "hsl": {
    "h": 238.052,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.48636,
    "c": 0.22134,
    "h": 273.1
  },
  "luminance": 0.10201
}

Semantic roles & 50–950 ramp

primary

#3F44D9

secondary

#DAD89A

accent

#E43EEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F44D9

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

Preview Lab → · Contrast checker → · Palette generator →