#3F548E#3F548E

#3F548E is a mid, moderate blue. Relative luminance 0.093; OKLCH L 45.7% C 0.098 H 267.4°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F548E
RGB	rgb(63, 84, 142)
HSL	hsl(224, 39%, 40%)
HSV	hsv(224, 56%, 56%)
CMYK	cmyk(55.6%, 40.8%, 0%, 44.3%)
CIE-LAB	lab(36.65, 9.90, -34.66)
CIE-LCH	lch(36.65, 36.04, 285.94°)
OKLab	oklab(45.73% -0.0044 -0.0982)
OKLCH	oklch(45.73% 0.098 267.4)
XYZ	xyz(10.1011, 9.3497, 26.8583)
Luminance	0.0935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F548E #8E793F

analogous

#3F7B8E #3F548E #523F8E

triadic

#3F548E #8E3F54 #548E3F

tetradic

#3F548E #8E3F7B #8E793F #3F8E52

square

#3F548E #8E3F7B #8E793F #3F8E52

split-complementary

#3F548E #8E523F #7B8E3F

monochromatic

#192239 #2C3B64 #3F548E #566FB4 #8193C7

Accessibility & contrast

On white

7.32

#3F548E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3F548E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F548E

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F548E	#FFFFFF	#000000	##FFFFFF
##3F548E	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C5A90

Deuteranopia (green-blind)

#33538D

Tritanopia (blue-blind)

#14616A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f548e;
/* rgb */ color: rgb(63, 84, 142);
/* oklch */ color: oklch(45.7% 0.098 267.4);

Tailwind

colors: {
  custom: {
    50: '#7a83af',
    500: '#3f548e',
    950: '#000000',
  },
}

SCSS

$custom: #3f548e;
$custom-light: #7a83af;
$custom-dark: #000000;

JSON

{
  "hex": "#3f548e",
  "rgb": {
    "r": 63,
    "g": 84,
    "b": 142
  },
  "hsl": {
    "h": 224.051,
    "s": 38.537,
    "l": 40.196
  },
  "oklch": {
    "l": 0.45731,
    "c": 0.09834,
    "h": 267.4
  },
  "luminance": 0.0935
}

Semantic roles & 50–950 ramp

primary

#3F548E

secondary

#B1A278

accent

#AF59CE

background

#F7F8FA

surface

#EEEFF4

border

#C9CACE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F548E

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

Preview Lab → · Contrast checker → · Palette generator →