#3971C2#3971C2

#3971C2 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.2% C 0.140 H 257.8°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3971C2
RGB	rgb(57, 113, 194)
HSL	hsl(215, 55%, 49%)
HSV	hsv(215, 71%, 76%)
CMYK	cmyk(70.6%, 41.8%, 0%, 23.9%)
CIE-LAB	lab(47.72, 8.86, -47.78)
CIE-LCH	lch(47.72, 48.59, 280.50°)
OKLab	oklab(55.18% -0.0294 -0.1364)
OKLCH	oklch(55.18% 0.14 257.8)
XYZ	xyz(17.3265, 16.5733, 53.3143)
Luminance	0.1658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3971C2 #C28A39

analogous

#39B6C2 #3971C2 #4539C2

triadic

#3971C2 #C23971 #71C239

tetradic

#3971C2 #C239B6 #C28A39 #39C245

square

#3971C2 #C239B6 #C28A39 #39C245

split-complementary

#3971C2 #C24539 #B6C239

monochromatic

#1D3A63 #2B5593 #3971C2 #6692D2 #95B4E0

Accessibility & contrast

On white

4.87

#3971C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3971C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3971C2

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3971C2	#FFFFFF	#000000	##FFFFFF
##3971C2	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B78C5

Deuteranopia (green-blind)

#346BC0

Tritanopia (blue-blind)

#008490

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3971c2;
/* rgb */ color: rgb(57, 113, 194);
/* oklch */ color: oklch(55.2% 0.140 257.8);

Tailwind

colors: {
  custom: {
    50: '#8099d5',
    500: '#3971c2',
    950: '#000000',
  },
}

SCSS

$custom: #3971c2;
$custom-light: #8099d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3971c2",
  "rgb": {
    "r": 57,
    "g": 113,
    "b": 194
  },
  "hsl": {
    "h": 215.474,
    "s": 54.582,
    "l": 49.216
  },
  "oklch": {
    "l": 0.55177,
    "c": 0.13957,
    "h": 257.8
  },
  "luminance": 0.16575
}

Semantic roles & 50–950 ramp

primary

#3971C2

secondary

#CBB18B

accent

#A14ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3971C2

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

Preview Lab → · Contrast checker → · Palette generator →