#3F48D9#3F48D9

#3F48D9 is a mid, highly saturated blue. Relative luminance 0.107; OKLCH L 49.3% C 0.217 H 272.5°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F48D9
RGB	rgb(63, 72, 217)
HSL	hsl(236, 67%, 55%)
HSV	hsv(236, 71%, 85%)
CMYK	cmyk(71%, 66.8%, 0%, 14.9%)
CIE-LAB	lab(39.07, 43.72, -75.00)
CIE-LCH	lch(39.07, 86.81, 300.24°)
OKLab	oklab(49.27% 0.0097 -0.2168)
OKLCH	oklch(49.27% 0.217 272.5)
XYZ	xyz(16.8874, 10.6996, 66.8074)
Luminance	0.1070 (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

#3F48D9 #D9D03F

analogous

#3F95D9 #3F48D9 #833FD9

triadic

#3F48D9 #D93F48 #48D93F

tetradic

#3F48D9 #D93F95 #D9D03F #3FD983

square

#3F48D9 #D93F95 #D9D03F #3FD983

split-complementary

#3F48D9 #D9833F #95D93F

monochromatic

#1A2084 #242DB7 #3F48D9 #7279E3 #A5A9ED

Accessibility & contrast

On white

6.69

#3F48D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3F48D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F48D9

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48D9	#FFFFFF	#000000	##FFFFFF
##3F48D9	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063DD

Deuteranopia (green-blind)

#0055D6

Tritanopia (blue-blind)

#006F8A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f48d9;
/* rgb */ color: rgb(63, 72, 217);
/* oklch */ color: oklch(49.3% 0.217 272.5);

Tailwind

colors: {
  custom: {
    50: '#897be6',
    500: '#3f48d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f48d9;
$custom-light: #897be6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48d9",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 217
  },
  "hsl": {
    "h": 236.494,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.49267,
    "c": 0.21702,
    "h": 272.5
  },
  "luminance": 0.10701
}

Semantic roles & 50–950 ramp

primary

#3F48D9

secondary

#DAD79A

accent

#E03EEA

background

#F9F7FE

surface

#F2EEFC

border

#CCC9D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F48D9

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

Preview Lab → · Contrast checker → · Palette generator →