#3F4E99#3F4E99

#3F4E99 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.1% C 0.123 H 272.1°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#3F4E99
RGB	rgb(63, 78, 153)
HSL	hsl(230, 42%, 42%)
HSV	hsv(230, 59%, 60%)
CMYK	cmyk(58.8%, 49%, 0%, 40%)
CIE-LAB	lab(35.61, 17.65, -42.99)
CIE-LCH	lch(35.61, 46.47, 292.32°)
OKLab	oklab(45.15% 0.0045 -0.1227)
OKLCH	oklch(45.15% 0.123 272.1)
XYZ	xyz(10.5222, 8.8046, 31.2758)
Luminance	0.0881 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4E99 #998A3F

analogous

#3F7B99 #3F4E99 #5D3F99

triadic

#3F4E99 #993F4E #4E993F

tetradic

#3F4E99 #993F7B #998A3F #3F995D

square

#3F4E99 #993F7B #998A3F #3F995D

split-complementary

#3F4E99 #995D3F #7B993F

monochromatic

#1B2242 #2D386E #3F4E99 #5A6ABB #8591CD

Accessibility & contrast

On white

7.61

#3F4E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#3F4E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E99

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4E99	#FFFFFF	#000000	##FFFFFF
##3F4E99	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29589C

Deuteranopia (green-blind)

#1B5097

Tritanopia (blue-blind)

#005F6C

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f4e99;
/* rgb */ color: rgb(63, 78, 153);
/* oklch */ color: oklch(45.1% 0.123 272.1);

Tailwind

colors: {
  custom: {
    50: '#7c7fb7',
    500: '#3f4e99',
    950: '#000000',
  },
}

SCSS

$custom: #3f4e99;
$custom-light: #7c7fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4e99",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 153
  },
  "hsl": {
    "h": 230,
    "s": 41.667,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45148,
    "c": 0.12282,
    "h": 272.1
  },
  "luminance": 0.08805
}

Semantic roles & 50–950 ramp

primary

#3F4E99

secondary

#B7AE7C

accent

#BD56D1

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #3F4E99

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

Preview Lab → · Contrast checker → · Palette generator →