#3F4DB0#3F4DB0

#3F4DB0 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.7% C 0.157 H 272.7°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DB0
RGB	rgb(63, 77, 176)
HSL	hsl(233, 47%, 47%)
HSV	hsv(233, 64%, 69%)
CMYK	cmyk(64.2%, 56.2%, 0%, 31%)
CIE-LAB	lab(36.93, 26.39, -54.61)
CIE-LCH	lch(36.93, 60.66, 295.80°)
OKLab	oklab(46.65% 0.0074 -0.1569)
OKLCH	oklch(46.65% 0.157 272.7)
XYZ	xyz(12.5376, 9.4980, 42.2385)
Luminance	0.0950 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DB0 #B0A23F

analogous

#3F86B0 #3F4DB0 #693FB0

triadic

#3F4DB0 #B03F4D #4DB03F

tetradic

#3F4DB0 #B03F86 #B0A23F #3FB069

square

#3F4DB0 #B03F86 #B0A23F #3FB069

split-complementary

#3F4DB0 #B0693F #86B03F

monochromatic

#1F2656 #2F3983 #3F4DB0 #6571C8 #929AD8

Accessibility & contrast

On white

7.24

#3F4DB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#3F4DB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4DB0

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DB0	#FFFFFF	#000000	##FFFFFF
##3F4DB0	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB3

Deuteranopia (green-blind)

#0052AE

Tritanopia (blue-blind)

#006577

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4db0;
/* rgb */ color: rgb(63, 77, 176);
/* oklch */ color: oklch(46.7% 0.157 272.7);

Tailwind

colors: {
  custom: {
    50: '#807ec8',
    500: '#3f4db0',
    950: '#000000',
  },
}

SCSS

$custom: #3f4db0;
$custom-light: #807ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4db0",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 176
  },
  "hsl": {
    "h": 232.566,
    "s": 47.28,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4665,
    "c": 0.15712,
    "h": 272.7
  },
  "luminance": 0.09499
}

Semantic roles & 50–950 ramp

primary

#3F4DB0

secondary

#C3BC88

accent

#C651D7

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4DB0

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

Preview Lab → · Contrast checker → · Palette generator →