#3F46D9#3F46D9

#3F46D9 is a mid, highly saturated blue. Relative luminance 0.104; OKLCH L 48.9% C 0.219 H 272.8°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F46D9
RGB	rgb(63, 70, 217)
HSL	hsl(237, 67%, 55%)
HSV	hsv(237, 71%, 85%)
CMYK	cmyk(71%, 67.7%, 0%, 14.9%)
CIE-LAB	lab(38.63, 44.91, -75.72)
CIE-LCH	lch(38.63, 88.04, 300.67°)
OKLab	oklab(48.95% 0.0109 -0.2189)
OKLCH	oklch(48.95% 0.219 272.8)
XYZ	xyz(16.7602, 10.4452, 66.7650)
Luminance	0.1045 (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

#3F46D9 #D9D23F

analogous

#3F93D9 #3F46D9 #853FD9

triadic

#3F46D9 #D93F46 #46D93F

tetradic

#3F46D9 #D93F93 #D9D23F #3FD985

square

#3F46D9 #D93F93 #D9D23F #3FD985

split-complementary

#3F46D9 #D9853F #93D93F

monochromatic

#1A1F84 #242BB7 #3F46D9 #7277E3 #A5A8ED

Accessibility & contrast

On white

6.80

#3F46D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3F46D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F46D9

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F46D9	#FFFFFF	#000000	##FFFFFF
##3F46D9	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062DE

Deuteranopia (green-blind)

#0054D6

Tritanopia (blue-blind)

#006E8A

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f46d9;
/* rgb */ color: rgb(63, 70, 217);
/* oklch */ color: oklch(48.9% 0.219 272.8);

Tailwind

colors: {
  custom: {
    50: '#897ae6',
    500: '#3f46d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f46d9;
$custom-light: #897ae6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f46d9",
  "rgb": {
    "r": 63,
    "g": 70,
    "b": 217
  },
  "hsl": {
    "h": 237.273,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.48948,
    "c": 0.2192,
    "h": 272.8
  },
  "luminance": 0.10447
}

Semantic roles & 50–950 ramp

primary

#3F46D9

secondary

#DAD79A

accent

#E23EEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F46D9

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

Preview Lab → · Contrast checker → · Palette generator →