#3F5A8D#3F5A8D

#3F5A8D is a mid, moderate blue. Relative luminance 0.103; OKLCH L 47.0% C 0.089 H 262.3°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F5A8D
RGB	rgb(63, 90, 141)
HSL	hsl(219, 38%, 40%)
HSV	hsv(219, 55%, 55%)
CMYK	cmyk(55.3%, 36.2%, 0%, 44.7%)
CIE-LAB	lab(38.36, 5.69, -31.34)
CIE-LCH	lch(38.36, 31.86, 280.30°)
OKLab	oklab(47.04% -0.012 -0.0885)
OKLCH	oklch(47.04% 0.089 262.3)
XYZ	xyz(10.5122, 10.2914, 26.6266)
Luminance	0.1029 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5A8D #8D723F

analogous

#3F818D #3F5A8D #4B3F8D

triadic

#3F5A8D #8D3F5A #5A8D3F

tetradic

#3F5A8D #8D3F81 #8D723F #3F8D4B

square

#3F5A8D #8D3F81 #8D723F #3F8D4B

split-complementary

#3F5A8D #8D4B3F #818D3F

monochromatic

#192438 #2C3F63 #3F5A8D #5676B3 #8098C6

Accessibility & contrast

On white

6.87

#3F5A8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3F5A8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5A8D

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5A8D	#FFFFFF	#000000	##FFFFFF
##3F5A8D	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#465E8F

Deuteranopia (green-blind)

#3C578C

Tritanopia (blue-blind)

#14656D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f5a8d;
/* rgb */ color: rgb(63, 90, 141);
/* oklch */ color: oklch(47.0% 0.089 262.3);

Tailwind

colors: {
  custom: {
    50: '#7a88ae',
    500: '#3f5a8d',
    950: '#000000',
  },
}

SCSS

$custom: #3f5a8d;
$custom-light: #7a88ae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5a8d",
  "rgb": {
    "r": 63,
    "g": 90,
    "b": 141
  },
  "hsl": {
    "h": 219.231,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.47038,
    "c": 0.08932,
    "h": 262.3
  },
  "luminance": 0.10292
}

Semantic roles & 50–950 ramp

primary

#3F5A8D

secondary

#B19D77

accent

#A65ACE

background

#F7F8FA

surface

#EEEFF4

border

#C9CACE

text

#090B10

muted

#7B7C7F

Preview Lab

Preview with #3F5A8D

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

Preview Lab → · Contrast checker → · Palette generator →