#3973DA#3973DA

#3973DA is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.2% C 0.169 H 260.9°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3973DA
RGB	rgb(57, 115, 218)
HSL	hsl(218, 69%, 54%)
HSV	hsv(218, 74%, 85%)
CMYK	cmyk(73.9%, 47.2%, 0%, 14.5%)
CIE-LAB	lab(49.73, 16.39, -58.26)
CIE-LCH	lch(49.73, 60.52, 285.72°)
OKLab	oklab(57.19% -0.0268 -0.1672)
OKLCH	oklch(57.19% 0.169 260.9)
XYZ	xyz(20.4684, 18.1910, 68.7485)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973DA #DAA039

analogous

#39C4DA #3973DA #5039DA

triadic

#3973DA #DA3973 #73DA39

tetradic

#3973DA #DA39C4 #DAA039 #39DA50

square

#3973DA #DA39C4 #DAA039 #39DA50

split-complementary

#3973DA #DA5039 #C4DA39

monochromatic

#183E81 #2256B4 #3973DA #6D97E4 #A0BCED

Accessibility & contrast

On white

4.53

#3973DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#3973DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3973DA

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973DA	#FFFFFF	#000000	##000000
##3973DA	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7EDE

Deuteranopia (green-blind)

#096FD8

Tritanopia (blue-blind)

#008B9C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3973da;
/* rgb */ color: rgb(57, 115, 218);
/* oklch */ color: oklch(57.2% 0.169 260.9);

Tailwind

colors: {
  custom: {
    50: '#849ae6',
    500: '#3973da',
    950: '#000000',
  },
}

SCSS

$custom: #3973da;
$custom-light: #849ae6;
$custom-dark: #000000;

JSON

{
  "hex": "#3973da",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 218
  },
  "hsl": {
    "h": 218.385,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.57194,
    "c": 0.16935,
    "h": 260.9
  },
  "luminance": 0.18193
}

Semantic roles & 50–950 ramp

primary

#3973DA

secondary

#DAC195

accent

#AC3CEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3973DA

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

Preview Lab → · Contrast checker → · Palette generator →