#3F5DBF#3F5DBF

#3F5DBF is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.0% C 0.158 H 267.7°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#3F5DBF
RGB	rgb(63, 93, 191)
HSL	hsl(226, 50%, 50%)
HSV	hsv(226, 67%, 75%)
CMYK	cmyk(67%, 51.3%, 0%, 25.1%)
CIE-LAB	lab(42.22, 21.41, -54.85)
CIE-LCH	lch(42.22, 58.88, 291.32°)
OKLab	oklab(50.98% -0.0063 -0.1574)
OKLCH	oklch(50.98% 0.158 267.7)
XYZ	xyz(15.3650, 12.6456, 50.9112)
Luminance	0.1265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5DBF #BFA13F

analogous

#3F9DBF #3F5DBF #613FBF

triadic

#3F5DBF #BF3F5D #5DBF3F

tetradic

#3F5DBF #BF3F9D #BFA13F #3FBF61

square

#3F5DBF #BF3F9D #BFA13F #3FBF61

split-complementary

#3F5DBF #BF613F #9DBF3F

monochromatic

#213063 #304791 #3F5DBF #6D84CF #9BAADE

Accessibility & contrast

On white

5.95

#3F5DBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#3F5DBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5DBF

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5DBF	#FFFFFF	#000000	##FFFFFF
##3F5DBF	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#226AC3

Deuteranopia (green-blind)

#005EBD

Tritanopia (blue-blind)

#007485

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3f5dbf;
/* rgb */ color: rgb(63, 93, 191);
/* oklch */ color: oklch(51.0% 0.158 267.7);

Tailwind

colors: {
  custom: {
    50: '#828ad3',
    500: '#3f5dbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f5dbf;
$custom-light: #828ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5dbf",
  "rgb": {
    "r": 63,
    "g": 93,
    "b": 191
  },
  "hsl": {
    "h": 225.938,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.50976,
    "c": 0.15756,
    "h": 267.7
  },
  "luminance": 0.12647
}

Semantic roles & 50–950 ramp

primary

#3F5DBF

secondary

#CABC90

accent

#B94EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F5DBF

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

Preview Lab → · Contrast checker → · Palette generator →