#3F4EB6#3F4EB6

#3F4EB6 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.3% C 0.164 H 272.3°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EB6
RGB	rgb(63, 78, 182)
HSL	hsl(232, 49%, 48%)
HSV	hsv(232, 65%, 71%)
CMYK	cmyk(65.4%, 57.1%, 0%, 28.6%)
CIE-LAB	lab(37.63, 27.87, -57.01)
CIE-LCH	lch(37.63, 63.46, 296.05°)
OKLab	oklab(47.32% 0.0066 -0.164)
OKLCH	oklch(47.32% 0.164 272.3)
XYZ	xyz(13.2150, 9.8818, 45.4579)
Luminance	0.0988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EB6 #B6A73F

analogous

#3F89B6 #3F4EB6 #6B3FB6

triadic

#3F4EB6 #B63F4E #4EB63F

tetradic

#3F4EB6 #B63F89 #B6A73F #3FB66B

square

#3F4EB6 #B63F89 #B6A73F #3FB66B

split-complementary

#3F4EB6 #B66B3F #89B63F

monochromatic

#20275B #2F3B89 #3F4EB6 #6874CB #959EDA

Accessibility & contrast

On white

7.06

#3F4EB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3F4EB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4EB6

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EB6	#FFFFFF	#000000	##FFFFFF
##3F4EB6	1.00	7.06	2.98	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBA

Deuteranopia (green-blind)

#0053B4

Tritanopia (blue-blind)

#00677A

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4eb6;
/* rgb */ color: rgb(63, 78, 182);
/* oklch */ color: oklch(47.3% 0.164 272.3);

Tailwind

colors: {
  custom: {
    50: '#817fcd',
    500: '#3f4eb6',
    950: '#000000',
  },
}

SCSS

$custom: #3f4eb6;
$custom-light: #817fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4eb6",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 182
  },
  "hsl": {
    "h": 232.437,
    "s": 48.571,
    "l": 48.039
  },
  "oklch": {
    "l": 0.47316,
    "c": 0.16414,
    "h": 272.3
  },
  "luminance": 0.09883
}

Semantic roles & 50–950 ramp

primary

#3F4EB6

secondary

#C6BE8B

accent

#C750D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4EB6

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

Preview Lab → · Contrast checker → · Palette generator →