#3F5EBB#3F5EBB

#3F5EBB is a mid, vivid blue. Relative luminance 0.127; OKLCH L 50.9% C 0.151 H 267.1°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#3F5EBB
RGB	rgb(63, 94, 187)
HSL	hsl(225, 50%, 49%)
HSV	hsv(225, 66%, 73%)
CMYK	cmyk(66.3%, 49.7%, 0%, 26.7%)
CIE-LAB	lab(42.23, 19.33, -52.51)
CIE-LCH	lch(42.23, 55.95, 290.21°)
OKLab	oklab(50.89% -0.0077 -0.1505)
OKLCH	oklch(50.89% 0.151 267.1)
XYZ	xyz(15.0191, 12.6486, 48.6540)
Luminance	0.1265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5EBB #BB9C3F

analogous

#3F9CBB #3F5EBB #5E3FBB

triadic

#3F5EBB #BB3F5E #5EBB3F

tetradic

#3F5EBB #BB3F9C #BB9C3F #3FBB5E

square

#3F5EBB #BB3F9C #BB9C3F #3FBB5E

split-complementary

#3F5EBB #BB5E3F #9CBB3F

monochromatic

#20305F #30478D #3F5EBB #6A83CD #98A9DC

Accessibility & contrast

On white

5.95

#3F5EBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#3F5EBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5EBB

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5EBB	#FFFFFF	#000000	##FFFFFF
##3F5EBB	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)

#2A6ABE

Deuteranopia (green-blind)

#045EB9

Tritanopia (blue-blind)

#007483

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3f5ebb;
/* rgb */ color: rgb(63, 94, 187);
/* oklch */ color: oklch(50.9% 0.151 267.1);

Tailwind

colors: {
  custom: {
    50: '#818bd0',
    500: '#3f5ebb',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ebb;
$custom-light: #818bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ebb",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 187
  },
  "hsl": {
    "h": 225,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.50894,
    "c": 0.15074,
    "h": 267.1
  },
  "luminance": 0.1265
}

Semantic roles & 50–950 ramp

primary

#3F5EBB

secondary

#C8BA8E

accent

#B74FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3F5EBB

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

Preview Lab → · Contrast checker → · Palette generator →