#3F4E73#3F4E73

#3F4E73 is a dark, moderate blue. Relative luminance 0.077; OKLCH L 42.8% C 0.065 H 266.8°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX#3F4E73
RGBrgb(63, 78, 115)
HSLhsl(223, 29%, 35%)
HSVhsv(223, 45%, 45%)
CMYKcmyk(45.2%, 32.2%, 0%, 54.9%)
CIE-LABlab(33.44, 4.80, -23.07)
CIE-LCHlch(33.44, 23.57, 281.75°)
OKLaboklab(42.78% -0.0036 -0.0646)
OKLCHoklch(42.78% 0.065 266.8)
XYZxyz(7.8678, 7.7429, 17.2963)
Luminance0.0774 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F4E73 #73643F
analogous
#3F6873 #3F4E73 #4A3F73
triadic
#3F4E73 #733F4E #4E733F
tetradic
#3F4E73 #733F68 #73643F #3F734A
square
#3F4E73 #733F68 #73643F #3F734A
split-complementary
#3F4E73 #734A3F #68733F
monochromatic
#141824 #29334B #3F4E73 #55699B #7889B5

Accessibility & contrast

On white

8.24
#3F4E73 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.55
#3F4E73 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E73
8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F4E73#FFFFFF#000000##FFFFFF
##3F4E731.008.242.558.24
#FFFFFF8.241.0021.001.00
#0000002.5521.001.0021.00
##FFFFFF8.241.0021.001.00

Color blindness preview

Protanopia (red-blind)
#415175
Deuteranopia (green-blind)
#3C4D72
Tritanopia (blue-blind)
#2D565B
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #3f4e73;
/* rgb */ color: rgb(63, 78, 115);
/* oklch */ color: oklch(42.8% 0.065 266.8);
Tailwind
colors: {
  custom: {
    50: '#777f9b',
    500: '#3f4e73',
    950: '#000000',
  },
}
SCSS
$custom: #3f4e73;
$custom-light: #777f9b;
$custom-dark: #000000;
JSON
{
  "hex": "#3f4e73",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 115
  },
  "hsl": {
    "h": 222.692,
    "s": 29.213,
    "l": 34.902
  },
  "oklch": {
    "l": 0.42782,
    "c": 0.06467,
    "h": 266.8
  },
  "luminance": 0.07743
}

Semantic roles & 50–950 ramp

primary
#3F4E73
secondary
#9F916E
accent
#A962C5
background
#F7F7F9
surface
#EDEEF2
border
#C8C9CC
text
#090A0E
muted
#7B7C7E

Preview Lab

Preview with #3F4E73

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

Preview Lab → · Contrast checker → · Palette generator →

#3F4E73 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva