#3F448C#3F448C

#3F448C is a dark, moderate blue. Relative luminance 0.071; OKLCH L 42.1% C 0.117 H 277.1°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F448C
RGB	rgb(63, 68, 140)
HSL	hsl(236, 38%, 40%)
HSV	hsv(236, 55%, 55%)
CMYK	cmyk(55%, 51.4%, 0%, 45.1%)
CIE-LAB	lab(32.00, 19.73, -40.86)
CIE-LCH	lch(32.00, 45.37, 295.78°)
OKLab	oklab(42.14% 0.0145 -0.1166)
OKLCH	oklch(42.14% 0.117 277.1)
XYZ	xyz(8.8491, 7.0839, 25.7069)
Luminance	0.0708 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F448C #8C873F

analogous

#3F6B8C #3F448C #613F8C

triadic

#3F448C #8C3F44 #448C3F

tetradic

#3F448C #8C3F6B #8C873F #3F8C61

square

#3F448C #8C3F6B #8C873F #3F8C61

split-complementary

#3F448C #8C613F #6B8C3F

monochromatic

#191B38 #2C2F62 #3F448C #555CB3 #8084C6

Accessibility & contrast

On white

8.69

#3F448C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3F448C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F448C

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F448C	#FFFFFF	#000000	##FFFFFF
##3F448C	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204E8F

Deuteranopia (green-blind)

#16488A

Tritanopia (blue-blind)

#1B5461

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f448c;
/* rgb */ color: rgb(63, 68, 140);
/* oklch */ color: oklch(42.1% 0.117 277.1);

Tailwind

colors: {
  custom: {
    50: '#7a77ae',
    500: '#3f448c',
    950: '#000000',
  },
}

SCSS

$custom: #3f448c;
$custom-light: #7a77ae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f448c",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 140
  },
  "hsl": {
    "h": 236.104,
    "s": 37.931,
    "l": 39.804
  },
  "oklch": {
    "l": 0.42144,
    "c": 0.11749,
    "h": 277.1
  },
  "luminance": 0.07084
}

Semantic roles & 50–950 ramp

primary

#3F448C

secondary

#B0AC77

accent

#C65ACE

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #3F448C

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

Preview Lab → · Contrast checker → · Palette generator →