#3F5EB2#3F5EB2

#3F5EB2 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.3% C 0.138 H 266.3°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#3F5EB2
RGB	rgb(63, 94, 178)
HSL	hsl(224, 48%, 47%)
HSV	hsv(224, 65%, 70%)
CMYK	cmyk(64.6%, 47.2%, 0%, 30.2%)
CIE-LAB	lab(41.65, 16.10, -48.17)
CIE-LCH	lch(41.65, 50.79, 288.48°)
OKLab	oklab(50.27% -0.0089 -0.1378)
OKLCH	oklch(50.27% 0.138 266.3)
XYZ	xyz(14.0857, 12.2752, 43.7379)
Luminance	0.1228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5EB2 #B2933F

analogous

#3F98B2 #3F5EB2 #593FB2

triadic

#3F5EB2 #B23F5E #5EB23F

tetradic

#3F5EB2 #B23F98 #B2933F #3FB259

square

#3F5EB2 #B23F98 #B2933F #3FB259

split-complementary

#3F5EB2 #B2593F #98B23F

monochromatic

#1F2E58 #2F4685 #3F5EB2 #6680C9 #93A6D9

Accessibility & contrast

On white

6.08

#3F5EB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#3F5EB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5EB2

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5EB2	#FFFFFF	#000000	##FFFFFF
##3F5EB2	1.00	6.08	3.46	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3468B5

Deuteranopia (green-blind)

#1E5DB0

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f5eb2;
/* rgb */ color: rgb(63, 94, 178);
/* oklch */ color: oklch(50.3% 0.138 266.3);

Tailwind

colors: {
  custom: {
    50: '#808bc9',
    500: '#3f5eb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f5eb2;
$custom-light: #808bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5eb2",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 178
  },
  "hsl": {
    "h": 223.826,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.50267,
    "c": 0.13807,
    "h": 266.3
  },
  "luminance": 0.12277
}

Semantic roles & 50–950 ramp

primary

#3F5EB2

secondary

#C4B489

accent

#B350D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3F5EB2

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

Preview Lab → · Contrast checker → · Palette generator →