#3F5BD2#3F5BD2

#3F5BD2 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 52.0% C 0.186 H 268.9°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BD2
RGB	rgb(63, 91, 210)
HSL	hsl(229, 62%, 54%)
HSV	hsv(229, 70%, 82%)
CMYK	cmyk(70%, 56.7%, 0%, 17.6%)
CIE-LAB	lab(43.05, 29.49, -64.49)
CIE-LCH	lch(43.05, 70.91, 294.58°)
OKLab	oklab(52.02% -0.0034 -0.1858)
OKLCH	oklch(52.02% 0.186 268.9)
XYZ	xyz(17.4198, 13.1903, 62.5882)
Luminance	0.1319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BD2 #D2B63F

analogous

#3FA5D2 #3F5BD2 #6C3FD2

triadic

#3F5BD2 #D23F5B #5BD23F

tetradic

#3F5BD2 #D23FA5 #D2B63F #3FD26C

square

#3F5BD2 #D23FA5 #D2B63F #3FD26C

split-complementary

#3F5BD2 #D26C3F #A5D23F

monochromatic

#1D2E7A #2841AC #3F5BD2 #7185DE #A2B0E9

Accessibility & contrast

On white

5.77

#3F5BD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3F5BD2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BD2

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BD2	#FFFFFF	#000000	##FFFFFF
##3F5BD2	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD6

Deuteranopia (green-blind)

#005FD0

Tritanopia (blue-blind)

#00788D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5bd2;
/* rgb */ color: rgb(63, 91, 210);
/* oklch */ color: oklch(52.0% 0.186 268.9);

Tailwind

colors: {
  custom: {
    50: '#8689e1',
    500: '#3f5bd2',
    950: '#000000',
  },
}

SCSS

$custom: #3f5bd2;
$custom-light: #8689e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5bd2",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 210
  },
  "hsl": {
    "h": 228.571,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.52024,
    "c": 0.18584,
    "h": 268.9
  },
  "luminance": 0.13192
}

Semantic roles & 50–950 ramp

primary

#3F5BD2

secondary

#D6CA97

accent

#C643E5

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #3F5BD2

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

Preview Lab → · Contrast checker → · Palette generator →