#3975D2#3975D2

#3975D2 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.1% C 0.156 H 259.0°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3975D2
RGB	rgb(57, 117, 210)
HSL	hsl(216, 63%, 52%)
HSV	hsv(216, 73%, 82%)
CMYK	cmyk(72.9%, 44.3%, 0%, 17.6%)
CIE-LAB	lab(49.79, 12.21, -53.62)
CIE-LCH	lch(49.79, 54.99, 282.83°)
OKLab	oklab(57.08% -0.0299 -0.1535)
OKLCH	oklch(57.08% 0.156 259)
XYZ	xyz(19.6773, 18.2434, 63.4446)
Luminance	0.1825 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975D2 #D29639

analogous

#39C1D2 #3975D2 #4A39D2

triadic

#3975D2 #D23975 #75D239

tetradic

#3975D2 #D239C1 #D29639 #39D24A

square

#3975D2 #D239C1 #D29639 #39D24A

split-complementary

#3975D2 #D24A39 #C1D239

monochromatic

#1B3E76 #2659A8 #3975D2 #6B98DD #9DBBE9

Accessibility & contrast

On white

4.52

#3975D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3975D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3975D2

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975D2	#FFFFFF	#000000	##000000
##3975D2	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#467ED6

Deuteranopia (green-blind)

#2870D0

Tritanopia (blue-blind)

#008B99

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3975d2;
/* rgb */ color: rgb(57, 117, 210);
/* oklch */ color: oklch(57.1% 0.156 259.0);

Tailwind

colors: {
  custom: {
    50: '#839ce0',
    500: '#3975d2',
    950: '#000000',
  },
}

SCSS

$custom: #3975d2;
$custom-light: #839ce0;
$custom-dark: #000000;

JSON

{
  "hex": "#3975d2",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 210
  },
  "hsl": {
    "h": 216.471,
    "s": 62.963,
    "l": 52.353
  },
  "oklch": {
    "l": 0.57085,
    "c": 0.15641,
    "h": 259
  },
  "luminance": 0.18246
}

Semantic roles & 50–950 ramp

primary

#3975D2

secondary

#D5BB92

accent

#A642E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3975D2

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

Preview Lab → · Contrast checker → · Palette generator →