#3F5FA3#3F5FA3

#3F5FA3 is a mid, moderate blue. Relative luminance 0.119; OKLCH L 49.5% C 0.115 H 263.7°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FA3
RGB	rgb(63, 95, 163)
HSL	hsl(221, 44%, 44%)
HSV	hsv(221, 61%, 64%)
CMYK	cmyk(61.3%, 41.7%, 0%, 36.1%)
CIE-LAB	lab(41.03, 10.13, -40.30)
CIE-LCH	lch(41.03, 41.56, 284.11°)
OKLab	oklab(49.5% -0.0126 -0.1147)
OKLCH	oklch(49.5% 0.115 263.7)
XYZ	xyz(12.7507, 11.8844, 36.2652)
Luminance	0.1189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FA3 #A3833F

analogous

#3F91A3 #3F5FA3 #513FA3

triadic

#3F5FA3 #A33F5F #5FA33F

tetradic

#3F5FA3 #A33F91 #A3833F #3FA351

square

#3F5FA3 #A33F91 #A3833F #3FA351

split-complementary

#3F5FA3 #A3513F #91A33F

monochromatic

#1D2C4B #2E4577 #3F5FA3 #5E7EC1 #8AA1D2

Accessibility & contrast

On white

6.22

#3F5FA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#3F5FA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FA3

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FA3	#FFFFFF	#000000	##FFFFFF
##3F5FA3	1.00	6.22	3.38	6.22
#FFFFFF	6.22	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4166A6

Deuteranopia (green-blind)

#335DA2

Tritanopia (blue-blind)

#006E79

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3f5fa3;
/* rgb */ color: rgb(63, 95, 163);
/* oklch */ color: oklch(49.5% 0.115 263.7);

Tailwind

colors: {
  custom: {
    50: '#7d8cbe',
    500: '#3f5fa3',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fa3;
$custom-light: #7d8cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fa3",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 163
  },
  "hsl": {
    "h": 220.8,
    "s": 44.248,
    "l": 44.314
  },
  "oklch": {
    "l": 0.495,
    "c": 0.11535,
    "h": 263.7
  },
  "luminance": 0.11886
}

Semantic roles & 50–950 ramp

primary

#3F5FA3

secondary

#BDAA81

accent

#AB54D4

background

#F8F8FB

surface

#EFF0F7

border

#CACBD0

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #3F5FA3

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

Preview Lab → · Contrast checker → · Palette generator →