#3973D2#3973D2

#3973D2 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.7% C 0.159 H 259.8°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3973D2
RGB	rgb(57, 115, 210)
HSL	hsl(217, 63%, 52%)
HSV	hsv(217, 73%, 82%)
CMYK	cmyk(72.9%, 45.2%, 0%, 17.6%)
CIE-LAB	lab(49.23, 13.46, -54.51)
CIE-LCH	lch(49.23, 56.15, 283.87°)
OKLab	oklab(56.65% -0.0281 -0.1562)
OKLCH	oklch(56.65% 0.159 259.8)
XYZ	xyz(19.4467, 17.7823, 63.3677)
Luminance	0.1778 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973D2 #D29839

analogous

#39BFD2 #3973D2 #4C39D2

triadic

#3973D2 #D23973 #73D239

tetradic

#3973D2 #D239BF #D29839 #39D24C

square

#3973D2 #D239BF #D29839 #39D24C

split-complementary

#3973D2 #D24C39 #BFD239

monochromatic

#1B3D76 #2657A8 #3973D2 #6B96DD #9DBAE9

Accessibility & contrast

On white

4.61

#3973D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3973D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3973D2

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973D2	#FFFFFF	#000000	##FFFFFF
##3973D2	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#427DD6

Deuteranopia (green-blind)

#226ED0

Tritanopia (blue-blind)

#008998

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3973d2;
/* rgb */ color: rgb(57, 115, 210);
/* oklch */ color: oklch(56.7% 0.159 259.8);

Tailwind

colors: {
  custom: {
    50: '#839ae0',
    500: '#3973d2',
    950: '#000000',
  },
}

SCSS

$custom: #3973d2;
$custom-light: #839ae0;
$custom-dark: #000000;

JSON

{
  "hex": "#3973d2",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 210
  },
  "hsl": {
    "h": 217.255,
    "s": 62.963,
    "l": 52.353
  },
  "oklch": {
    "l": 0.56653,
    "c": 0.15871,
    "h": 259.8
  },
  "luminance": 0.17784
}

Semantic roles & 50–950 ramp

primary

#3973D2

secondary

#D5BB92

accent

#A842E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3973D2

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

Preview Lab → · Contrast checker → · Palette generator →