#3F5CBB#3F5CBB

#3F5CBB is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.5% C 0.153 H 267.8°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CBB
RGB	rgb(63, 92, 187)
HSL	hsl(226, 50%, 49%)
HSV	hsv(226, 66%, 73%)
CMYK	cmyk(66.3%, 50.8%, 0%, 26.7%)
CIE-LAB	lab(41.69, 20.62, -53.38)
CIE-LCH	lch(41.69, 57.23, 291.12°)
OKLab	oklab(50.48% -0.0058 -0.1531)
OKLCH	oklch(50.48% 0.153 267.8)
XYZ	xyz(14.8436, 12.2975, 48.5955)
Luminance	0.1230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CBB #BB9E3F

analogous

#3F9ABB #3F5CBB #603FBB

triadic

#3F5CBB #BB3F5C #5CBB3F

tetradic

#3F5CBB #BB3F9A #BB9E3F #3FBB60

square

#3F5CBB #BB3F9A #BB9E3F #3FBB60

split-complementary

#3F5CBB #BB603F #9ABB3F

monochromatic

#202F5F #30458D #3F5CBB #6A81CD #98A8DC

Accessibility & contrast

On white

6.07

#3F5CBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#3F5CBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CBB

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CBB	#FFFFFF	#000000	##FFFFFF
##3F5CBB	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2568BE

Deuteranopia (green-blind)

#005DB9

Tritanopia (blue-blind)

#007283

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f5cbb;
/* rgb */ color: rgb(63, 92, 187);
/* oklch */ color: oklch(50.5% 0.153 267.8);

Tailwind

colors: {
  custom: {
    50: '#8189d0',
    500: '#3f5cbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cbb;
$custom-light: #8189d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cbb",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 187
  },
  "hsl": {
    "h": 225.968,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.50481,
    "c": 0.15325,
    "h": 267.8
  },
  "luminance": 0.12299
}

Semantic roles & 50–950 ramp

primary

#3F5CBB

secondary

#C8BA8E

accent

#B94FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3F5CBB

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

Preview Lab → · Contrast checker → · Palette generator →