#3F4FB9#3F4FB9

#3F4FB9 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.7% C 0.167 H 272.0°. Best body text is #FFFFFF at 6.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FB9
RGB	rgb(63, 79, 185)
HSL	hsl(232, 49%, 49%)
HSV	hsv(232, 66%, 73%)
CMYK	cmyk(65.9%, 57.3%, 0%, 27.5%)
CIE-LAB	lab(38.11, 28.28, -58.00)
CIE-LCH	lch(38.11, 64.53, 296.00°)
OKLab	oklab(47.75% 0.0058 -0.1669)
OKLCH	oklch(47.75% 0.167 272)
XYZ	xyz(13.5999, 10.1503, 47.1320)
Luminance	0.1015 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FB9 #B9A93F

analogous

#3F8CB9 #3F4FB9 #6C3FB9

triadic

#3F4FB9 #B93F4F #4FB93F

tetradic

#3F4FB9 #B93F8C #B9A93F #3FB96C

square

#3F4FB9 #B93F8C #B9A93F #3FB96C

split-complementary

#3F4FB9 #B96C3F #8CB93F

monochromatic

#20285E #2F3C8B #3F4FB9 #6976CC #97A0DC

Accessibility & contrast

On white

6.93

#3F4FB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#3F4FB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FB9

6.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FB9	#FFFFFF	#000000	##FFFFFF
##3F4FB9	1.00	6.93	3.03	6.93
#FFFFFF	6.93	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBD

Deuteranopia (green-blind)

#0054B7

Tritanopia (blue-blind)

#00697C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f4fb9;
/* rgb */ color: rgb(63, 79, 185);
/* oklch */ color: oklch(47.7% 0.167 272.0);

Tailwind

colors: {
  custom: {
    50: '#8280cf',
    500: '#3f4fb9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fb9;
$custom-light: #8280cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fb9",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 185
  },
  "hsl": {
    "h": 232.131,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.47746,
    "c": 0.16699,
    "h": 272
  },
  "luminance": 0.10152
}

Semantic roles & 50–950 ramp

primary

#3F4FB9

secondary

#C7C08D

accent

#C74FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #3F4FB9

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

Preview Lab → · Contrast checker → · Palette generator →