#3F4FAF#3F4FAF

#3F4FAF is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.0% C 0.153 H 272.0°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FAF
RGB	rgb(63, 79, 175)
HSL	hsl(231, 47%, 47%)
HSV	hsv(231, 64%, 69%)
CMYK	cmyk(64%, 54.9%, 0%, 31.4%)
CIE-LAB	lab(37.38, 24.75, -53.29)
CIE-LCH	lch(37.38, 58.75, 294.91°)
OKLab	oklab(46.97% 0.0055 -0.153)
OKLCH	oklch(46.97% 0.153 272)
XYZ	xyz(12.5812, 9.7428, 41.7667)
Luminance	0.0974 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FAF #AF9F3F

analogous

#3F87AF #3F4FAF #673FAF

triadic

#3F4FAF #AF3F4F #4FAF3F

tetradic

#3F4FAF #AF3F87 #AF9F3F #3FAF67

square

#3F4FAF #AF3F87 #AF9F3F #3FAF67

split-complementary

#3F4FAF #AF673F #87AF3F

monochromatic

#1F2655 #2F3B82 #3F4FAF #6472C7 #919BD7

Accessibility & contrast

On white

7.12

#3F4FAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3F4FAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4FAF

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FAF	#FFFFFF	#000000	##FFFFFF
##3F4FAF	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#075DB2

Deuteranopia (green-blind)

#0053AD

Tritanopia (blue-blind)

#006677

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4faf;
/* rgb */ color: rgb(63, 79, 175);
/* oklch */ color: oklch(47.0% 0.153 272.0);

Tailwind

colors: {
  custom: {
    50: '#8080c8',
    500: '#3f4faf',
    950: '#000000',
  },
}

SCSS

$custom: #3f4faf;
$custom-light: #8080c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4faf",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 175
  },
  "hsl": {
    "h": 231.429,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.46965,
    "c": 0.15314,
    "h": 272
  },
  "luminance": 0.09744
}

Semantic roles & 50–950 ramp

primary

#3F4FAF

secondary

#C3BA87

accent

#C451D7

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4FAF

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

Preview Lab → · Contrast checker → · Palette generator →