#3F4EB2#3F4EB2

#3F4EB2 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.0% C 0.159 H 272.4°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EB2
RGB	rgb(63, 78, 178)
HSL	hsl(232, 48%, 47%)
HSV	hsv(232, 65%, 70%)
CMYK	cmyk(64.6%, 56.2%, 0%, 30.2%)
CIE-LAB	lab(37.33, 26.45, -55.14)
CIE-LCH	lch(37.33, 61.15, 295.63°)
OKLab	oklab(47% 0.0065 -0.1585)
OKLCH	oklch(47% 0.159 272.4)
XYZ	xyz(12.8075, 9.7188, 43.3118)
Luminance	0.0972 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EB2 #B2A33F

analogous

#3F88B2 #3F4EB2 #6A3FB2

triadic

#3F4EB2 #B23F4E #4EB23F

tetradic

#3F4EB2 #B23F88 #B2A33F #3FB26A

square

#3F4EB2 #B23F88 #B2A33F #3FB26A

split-complementary

#3F4EB2 #B26A3F #88B23F

monochromatic

#1F2658 #2F3A85 #3F4EB2 #6672C9 #939CD9

Accessibility & contrast

On white

7.13

#3F4EB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#3F4EB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4EB2

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EB2	#FFFFFF	#000000	##FFFFFF
##3F4EB2	1.00	7.13	2.94	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB5

Deuteranopia (green-blind)

#0053B0

Tritanopia (blue-blind)

#006678

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4eb2;
/* rgb */ color: rgb(63, 78, 178);
/* oklch */ color: oklch(47.0% 0.159 272.4);

Tailwind

colors: {
  custom: {
    50: '#817fca',
    500: '#3f4eb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f4eb2;
$custom-light: #817fca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4eb2",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 178
  },
  "hsl": {
    "h": 232.174,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47001,
    "c": 0.15861,
    "h": 272.4
  },
  "luminance": 0.0972
}

Semantic roles & 50–950 ramp

primary

#3F4EB2

secondary

#C4BC89

accent

#C650D7

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4EB2

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

Preview Lab → · Contrast checker → · Palette generator →