#3970C0#3970C0

#3970C0 is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.8% C 0.138 H 257.9°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3970C0
RGB	rgb(57, 112, 192)
HSL	hsl(216, 54%, 49%)
HSV	hsv(216, 70%, 75%)
CMYK	cmyk(70.3%, 41.7%, 0%, 24.7%)
CIE-LAB	lab(47.32, 8.76, -47.27)
CIE-LCH	lch(47.32, 48.07, 280.49°)
OKLab	oklab(54.83% -0.0289 -0.1349)
OKLCH	oklch(54.83% 0.138 257.9)
XYZ	xyz(16.9925, 16.2622, 52.1023)
Luminance	0.1626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3970C0 #C08939

analogous

#39B4C0 #3970C0 #4639C0

triadic

#3970C0 #C03970 #70C039

tetradic

#3970C0 #C039B4 #C08939 #39C046

square

#3970C0 #C039B4 #C08939 #39C046

split-complementary

#3970C0 #C04639 #B4C039

monochromatic

#1D3962 #2B5491 #3970C0 #6591D1 #94B3DF

Accessibility & contrast

On white

4.94

#3970C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#3970C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3970C0

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3970C0	#FFFFFF	#000000	##FFFFFF
##3970C0	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A77C3

Deuteranopia (green-blind)

#346ABE

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3970c0;
/* rgb */ color: rgb(57, 112, 192);
/* oklch */ color: oklch(54.8% 0.138 257.9);

Tailwind

colors: {
  custom: {
    50: '#7f98d3',
    500: '#3970c0',
    950: '#000000',
  },
}

SCSS

$custom: #3970c0;
$custom-light: #7f98d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3970c0",
  "rgb": {
    "r": 57,
    "g": 112,
    "b": 192
  },
  "hsl": {
    "h": 215.556,
    "s": 54.217,
    "l": 48.824
  },
  "oklch": {
    "l": 0.54829,
    "c": 0.138,
    "h": 257.9
  },
  "luminance": 0.16264
}

Semantic roles & 50–950 ramp

primary

#3970C0

secondary

#CBB08A

accent

#A24ADE

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3970C0

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

Preview Lab → · Contrast checker → · Palette generator →