#3F5CBC#3F5CBC

#3F5CBC is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.6% C 0.155 H 267.9°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CBC
RGB	rgb(63, 92, 188)
HSL	hsl(226, 50%, 49%)
HSV	hsv(226, 66%, 74%)
CMYK	cmyk(66.5%, 51.1%, 0%, 26.3%)
CIE-LAB	lab(41.75, 20.97, -53.86)
CIE-LCH	lch(41.75, 57.80, 291.28°)
OKLab	oklab(50.55% -0.0057 -0.1545)
OKLCH	oklch(50.55% 0.155 267.9)
XYZ	xyz(14.9510, 12.3405, 49.1612)
Luminance	0.1234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CBC #BC9F3F

analogous

#3F9BBC #3F5CBC #613FBC

triadic

#3F5CBC #BC3F5C #5CBC3F

tetradic

#3F5CBC #BC3F9B #BC9F3F #3FBC61

square

#3F5CBC #BC3F9B #BC9F3F #3FBC61

split-complementary

#3F5CBC #BC613F #9BBC3F

monochromatic

#202F60 #30468E #3F5CBC #6B82CD #99A8DD

Accessibility & contrast

On white

6.05

#3F5CBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#3F5CBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CBC

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CBC	#FFFFFF	#000000	##FFFFFF
##3F5CBC	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2368BF

Deuteranopia (green-blind)

#005DBA

Tritanopia (blue-blind)

#007383

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f5cbc;
/* rgb */ color: rgb(63, 92, 188);
/* oklch */ color: oklch(50.6% 0.155 267.9);

Tailwind

colors: {
  custom: {
    50: '#8289d1',
    500: '#3f5cbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cbc;
$custom-light: #8289d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cbc",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 188
  },
  "hsl": {
    "h": 226.08,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.50553,
    "c": 0.15465,
    "h": 267.9
  },
  "luminance": 0.12342
}

Semantic roles & 50–950 ramp

primary

#3F5CBC

secondary

#C9BB8E

accent

#B94ED9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #3F5CBC

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

Preview Lab → · Contrast checker → · Palette generator →