#3F5BAF#3F5BAF

#3F5BAF is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.4% C 0.138 H 267.4°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BAF
RGB	rgb(63, 91, 175)
HSL	hsl(225, 47%, 47%)
HSV	hsv(225, 64%, 69%)
CMYK	cmyk(64%, 48%, 0%, 31.4%)
CIE-LAB	lab(40.63, 16.96, -48.05)
CIE-LCH	lch(40.63, 50.96, 289.45°)
OKLab	oklab(49.42% -0.0063 -0.1375)
OKLCH	oklch(49.42% 0.138 267.4)
XYZ	xyz(13.5262, 11.6329, 42.0817)
Luminance	0.1163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BAF #AF933F

analogous

#3F93AF #3F5BAF #5B3FAF

triadic

#3F5BAF #AF3F5B #5BAF3F

tetradic

#3F5BAF #AF3F93 #AF933F #3FAF5B

square

#3F5BAF #AF3F93 #AF933F #3FAF5B

split-complementary

#3F5BAF #AF5B3F #93AF3F

monochromatic

#1F2C55 #2F4482 #3F5BAF #647DC7 #91A3D7

Accessibility & contrast

On white

6.31

#3F5BAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#3F5BAF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BAF

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BAF	#FFFFFF	#000000	##FFFFFF
##3F5BAF	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3065B2

Deuteranopia (green-blind)

#1A5BAD

Tritanopia (blue-blind)

#006E7C

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f5baf;
/* rgb */ color: rgb(63, 91, 175);
/* oklch */ color: oklch(49.4% 0.138 267.4);

Tailwind

colors: {
  custom: {
    50: '#7f89c7',
    500: '#3f5baf',
    950: '#000000',
  },
}

SCSS

$custom: #3f5baf;
$custom-light: #7f89c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5baf",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 175
  },
  "hsl": {
    "h": 225,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.49424,
    "c": 0.13762,
    "h": 267.4
  },
  "luminance": 0.11634
}

Semantic roles & 50–950 ramp

primary

#3F5BAF

secondary

#C3B487

accent

#B551D7

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3F5BAF

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

Preview Lab → · Contrast checker → · Palette generator →