#3F5AC7#3F5AC7

#3F5AC7 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.0% C 0.172 H 269.0°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F5AC7
RGB	rgb(63, 90, 199)
HSL	hsl(228, 55%, 51%)
HSV	hsv(228, 68%, 78%)
CMYK	cmyk(68.3%, 54.8%, 0%, 22%)
CIE-LAB	lab(41.99, 26.20, -59.87)
CIE-LCH	lch(41.99, 65.35, 293.64°)
OKLab	oklab(50.97% -0.0031 -0.1723)
OKLCH	oklch(50.97% 0.172 269)
XYZ	xyz(16.0113, 12.4911, 55.5890)
Luminance	0.1249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5AC7 #C7AC3F

analogous

#3F9EC7 #3F5AC7 #683FC7

triadic

#3F5AC7 #C73F5A #5AC73F

tetradic

#3F5AC7 #C73F9E #C7AC3F #3FC768

square

#3F5AC7 #C73F9E #C7AC3F #3FC768

split-complementary

#3F5AC7 #C7683F #9EC73F

monochromatic

#202F6C #2D439B #3F5AC7 #6E83D5 #9EABE3

Accessibility & contrast

On white

6.00

#3F5AC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#3F5AC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5AC7

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5AC7	#FFFFFF	#000000	##FFFFFF
##3F5AC7	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACB

Deuteranopia (green-blind)

#005DC5

Tritanopia (blue-blind)

#007488

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f5ac7;
/* rgb */ color: rgb(63, 90, 199);
/* oklch */ color: oklch(51.0% 0.172 269.0);

Tailwind

colors: {
  custom: {
    50: '#8488d9',
    500: '#3f5ac7',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ac7;
$custom-light: #8488d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ac7",
  "rgb": {
    "r": 63,
    "g": 90,
    "b": 199
  },
  "hsl": {
    "h": 228.088,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.50973,
    "c": 0.17229,
    "h": 269
  },
  "luminance": 0.12493
}

Semantic roles & 50–950 ramp

primary

#3F5AC7

secondary

#CFC393

accent

#C14ADE

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5AC7

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

Preview Lab → · Contrast checker → · Palette generator →