#3F4EB3#3F4EB3

#3F4EB3 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.1% C 0.160 H 272.3°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EB3
RGB	rgb(63, 78, 179)
HSL	hsl(232, 48%, 47%)
HSV	hsv(232, 65%, 70%)
CMYK	cmyk(64.8%, 56.4%, 0%, 29.8%)
CIE-LAB	lab(37.41, 26.81, -55.61)
CIE-LCH	lch(37.41, 61.73, 295.74°)
OKLab	oklab(47.08% 0.0066 -0.1599)
OKLCH	oklch(47.08% 0.16 272.3)
XYZ	xyz(12.9083, 9.7591, 43.8425)
Luminance	0.0976 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EB3 #B3A43F

analogous

#3F88B3 #3F4EB3 #6A3FB3

triadic

#3F4EB3 #B33F4E #4EB33F

tetradic

#3F4EB3 #B33F88 #B3A43F #3FB36A

square

#3F4EB3 #B33F88 #B3A43F #3FB36A

split-complementary

#3F4EB3 #B36A3F #88B33F

monochromatic

#1F2758 #2F3A86 #3F4EB3 #6673C9 #939CD9

Accessibility & contrast

On white

7.11

#3F4EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3F4EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4EB3

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EB3	#FFFFFF	#000000	##FFFFFF
##3F4EB3	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB6

Deuteranopia (green-blind)

#0053B1

Tritanopia (blue-blind)

#006679

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4eb3;
/* rgb */ color: rgb(63, 78, 179);
/* oklch */ color: oklch(47.1% 0.160 272.3);

Tailwind

colors: {
  custom: {
    50: '#817fca',
    500: '#3f4eb3',
    950: '#000000',
  },
}

SCSS

$custom: #3f4eb3;
$custom-light: #817fca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4eb3",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 179
  },
  "hsl": {
    "h": 232.241,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.47079,
    "c": 0.16,
    "h": 272.3
  },
  "luminance": 0.0976
}

Semantic roles & 50–950 ramp

primary

#3F4EB3

secondary

#C4BD89

accent

#C650D8

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4EB3

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

Preview Lab → · Contrast checker → · Palette generator →