#3973D5#3973D5

#3973D5 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 56.9% C 0.163 H 260.2°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3973D5
RGB	rgb(57, 115, 213)
HSL	hsl(218, 65%, 53%)
HSV	hsv(218, 73%, 84%)
CMYK	cmyk(73.2%, 46%, 0%, 16.5%)
CIE-LAB	lab(49.41, 14.56, -55.92)
CIE-LCH	lch(49.41, 57.79, 284.59°)
OKLab	oklab(56.85% -0.0276 -0.1603)
OKLCH	oklch(56.85% 0.163 260.2)
XYZ	xyz(19.8240, 17.9332, 65.3546)
Luminance	0.1794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973D5 #D59B39

analogous

#39C1D5 #3973D5 #4D39D5

triadic

#3973D5 #D53973 #73D539

tetradic

#3973D5 #D539C1 #D59B39 #39D54D

square

#3973D5 #D539C1 #D59B39 #39D54D

split-complementary

#3973D5 #D54D39 #C1D539

monochromatic

#1A3E7A #2557AC #3973D5 #6B97E0 #9EBAEA

Accessibility & contrast

On white

4.58

#3973D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#3973D5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3973D5

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973D5	#FFFFFF	#000000	##000000
##3973D5	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7DD9

Deuteranopia (green-blind)

#1B6FD3

Tritanopia (blue-blind)

#008A9A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3973d5;
/* rgb */ color: rgb(57, 115, 213);
/* oklch */ color: oklch(56.9% 0.163 260.2);

Tailwind

colors: {
  custom: {
    50: '#839ae2',
    500: '#3973d5',
    950: '#000000',
  },
}

SCSS

$custom: #3973d5;
$custom-light: #839ae2;
$custom-dark: #000000;

JSON

{
  "hex": "#3973d5",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 213
  },
  "hsl": {
    "h": 217.692,
    "s": 65,
    "l": 52.941
  },
  "oklch": {
    "l": 0.56854,
    "c": 0.16271,
    "h": 260.2
  },
  "luminance": 0.17935
}

Semantic roles & 50–950 ramp

primary

#3973D5

secondary

#D7BE93

accent

#A940E8

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3973D5

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

Preview Lab → · Contrast checker → · Palette generator →