#3F5DD9#3F5DD9

#3F5DD9 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 53.0% C 0.193 H 268.6°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#3F5DD9
RGB	rgb(63, 93, 217)
HSL	hsl(228, 67%, 55%)
HSV	hsv(228, 71%, 85%)
CMYK	cmyk(71%, 57.1%, 0%, 14.9%)
CIE-LAB	lab(44.08, 30.72, -66.81)
CIE-LCH	lch(44.08, 73.54, 294.69°)
OKLab	oklab(52.96% -0.0047 -0.1926)
OKLCH	oklch(52.96% 0.193 268.6)
XYZ	xyz(18.4843, 13.8933, 67.3397)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5DD9 #D9BB3F

analogous

#3FAAD9 #3F5DD9 #6E3FD9

triadic

#3F5DD9 #D93F5D #5DD93F

tetradic

#3F5DD9 #D93FAA #D9BB3F #3FD96E

square

#3F5DD9 #D93FAA #D9BB3F #3FD96E

split-complementary

#3F5DD9 #D96E3F #AAD93F

monochromatic

#1A2F84 #2441B7 #3F5DD9 #7288E3 #A5B3ED

Accessibility & contrast

On white

5.56

#3F5DD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#3F5DD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5DD9

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5DD9	#FFFFFF	#000000	##FFFFFF
##3F5DD9	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070DD

Deuteranopia (green-blind)

#0061D7

Tritanopia (blue-blind)

#007C92

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3f5dd9;
/* rgb */ color: rgb(63, 93, 217);
/* oklch */ color: oklch(53.0% 0.193 268.6);

Tailwind

colors: {
  custom: {
    50: '#878ae6',
    500: '#3f5dd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f5dd9;
$custom-light: #878ae6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5dd9",
  "rgb": {
    "r": 63,
    "g": 93,
    "b": 217
  },
  "hsl": {
    "h": 228.312,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.52959,
    "c": 0.19269,
    "h": 268.6
  },
  "luminance": 0.13895
}

Semantic roles & 50–950 ramp

primary

#3F5DD9

secondary

#DACE9A

accent

#C83EEA

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3F5DD9

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

Preview Lab → · Contrast checker → · Palette generator →