#3F548D#3F548D

#3F548D is a mid, moderate blue. Relative luminance 0.093; OKLCH L 45.7% C 0.097 H 267.3°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F548D
RGB	rgb(63, 84, 141)
HSL	hsl(224, 38%, 40%)
HSV	hsv(224, 55%, 55%)
CMYK	cmyk(55.3%, 40.4%, 0%, 44.7%)
CIE-LAB	lab(36.59, 9.56, -34.14)
CIE-LCH	lch(36.59, 35.45, 285.64°)
OKLab	oklab(45.67% -0.0046 -0.0967)
OKLCH	oklch(45.67% 0.097 267.3)
XYZ	xyz(10.0263, 9.3198, 26.4647)
Luminance	0.0932 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F548D #8D783F

analogous

#3F7B8D #3F548D #513F8D

triadic

#3F548D #8D3F54 #548D3F

tetradic

#3F548D #8D3F7B #8D783F #3F8D51

square

#3F548D #8D3F7B #8D783F #3F8D51

split-complementary

#3F548D #8D513F #7B8D3F

monochromatic

#192238 #2C3B63 #3F548D #566FB3 #8093C6

Accessibility & contrast

On white

7.33

#3F548D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#3F548D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F548D

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F548D	#FFFFFF	#000000	##FFFFFF
##3F548D	1.00	7.33	2.86	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D5A8F

Deuteranopia (green-blind)

#34538C

Tritanopia (blue-blind)

#166069

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f548d;
/* rgb */ color: rgb(63, 84, 141);
/* oklch */ color: oklch(45.7% 0.097 267.3);

Tailwind

colors: {
  custom: {
    50: '#7a83ae',
    500: '#3f548d',
    950: '#000000',
  },
}

SCSS

$custom: #3f548d;
$custom-light: #7a83ae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f548d",
  "rgb": {
    "r": 63,
    "g": 84,
    "b": 141
  },
  "hsl": {
    "h": 223.846,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.4567,
    "c": 0.09683,
    "h": 267.3
  },
  "luminance": 0.0932
}

Semantic roles & 50–950 ramp

primary

#3F548D

secondary

#B1A177

accent

#AF5ACE

background

#F7F8FA

surface

#EEEFF4

border

#C9CACE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F548D

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

Preview Lab → · Contrast checker → · Palette generator →