#3F5FBD#3F5FBD

#3F5FBD is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.2% C 0.152 H 266.8°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FBD
RGB	rgb(63, 95, 189)
HSL	hsl(225, 50%, 49%)
HSV	hsv(225, 67%, 74%)
CMYK	cmyk(66.7%, 49.7%, 0%, 25.9%)
CIE-LAB	lab(42.63, 19.41, -53.02)
CIE-LCH	lch(42.63, 56.46, 290.10°)
OKLab	oklab(51.24% -0.0084 -0.152)
OKLCH	oklch(51.24% 0.152 266.8)
XYZ	xyz(15.3242, 12.9138, 49.8193)
Luminance	0.1291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FBD #BD9D3F

analogous

#3F9EBD #3F5FBD #5E3FBD

triadic

#3F5FBD #BD3F5F #5FBD3F

tetradic

#3F5FBD #BD3F9E #BD9D3F #3FBD5E

square

#3F5FBD #BD3F9E #BD9D3F #3FBD5E

split-complementary

#3F5FBD #BD5E3F #9EBD3F

monochromatic

#203161 #30488F #3F5FBD #6B84CE #99ABDD

Accessibility & contrast

On white

5.86

#3F5FBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#3F5FBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FBD

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FBD	#FFFFFF	#000000	##FFFFFF
##3F5FBD	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B6BC0

Deuteranopia (green-blind)

#025FBB

Tritanopia (blue-blind)

#007585

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f5fbd;
/* rgb */ color: rgb(63, 95, 189);
/* oklch */ color: oklch(51.2% 0.152 266.8);

Tailwind

colors: {
  custom: {
    50: '#828bd1',
    500: '#3f5fbd',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fbd;
$custom-light: #828bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fbd",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 189
  },
  "hsl": {
    "h": 224.762,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.51243,
    "c": 0.15226,
    "h": 266.8
  },
  "luminance": 0.12915
}

Semantic roles & 50–950 ramp

primary

#3F5FBD

secondary

#C9BA8F

accent

#B64EDA

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #3F5FBD

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

Preview Lab → · Contrast checker → · Palette generator →