#3F5C8A#3F5C8A

#3F5C8A is a mid, moderate blue. Relative luminance 0.105; OKLCH L 47.3% C 0.083 H 259.3°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F5C8A
RGB	rgb(63, 92, 138)
HSL	hsl(217, 37%, 39%)
HSV	hsv(217, 54%, 54%)
CMYK	cmyk(54.3%, 33.3%, 0%, 45.9%)
CIE-LAB	lab(38.80, 3.41, -28.83)
CIE-LCH	lch(38.80, 29.03, 276.74°)
OKLab	oklab(47.33% -0.0153 -0.0812)
OKLCH	oklch(47.33% 0.083 259.3)
XYZ	xyz(10.4629, 10.5452, 25.5239)
Luminance	0.1055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5C8A #8A6D3F

analogous

#3F828A #3F5C8A #483F8A

triadic

#3F5C8A #8A3F5C #5C8A3F

tetradic

#3F5C8A #8A3F82 #8A6D3F #3F8A48

square

#3F5C8A #8A3F82 #8A6D3F #3F8A48

split-complementary

#3F5C8A #8A483F #828A3F

monochromatic

#192436 #2C4060 #3F5C8A #5579B1 #7F9AC5

Accessibility & contrast

On white

6.75

#3F5C8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3F5C8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5C8A

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5C8A	#FFFFFF	#000000	##FFFFFF
##3F5C8A	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A5F8C

Deuteranopia (green-blind)

#415889

Tritanopia (blue-blind)

#17666D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f5c8a;
/* rgb */ color: rgb(63, 92, 138);
/* oklch */ color: oklch(47.3% 0.083 259.3);

Tailwind

colors: {
  custom: {
    50: '#7989ac',
    500: '#3f5c8a',
    950: '#000000',
  },
}

SCSS

$custom: #3f5c8a;
$custom-light: #7989ac;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5c8a",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 138
  },
  "hsl": {
    "h": 216.8,
    "s": 37.313,
    "l": 39.412
  },
  "oklch": {
    "l": 0.47333,
    "c": 0.08261,
    "h": 259.3
  },
  "luminance": 0.10546
}

Semantic roles & 50–950 ramp

primary

#3F5C8A

secondary

#AF9976

accent

#A15BCD

background

#F7F8FA

surface

#EEF0F4

border

#C9CBCE

text

#090B10

muted

#7B7C7F

Preview Lab

Preview with #3F5C8A

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

Preview Lab → · Contrast checker → · Palette generator →