#3970C1#3970C1

#3970C1 is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.9% C 0.139 H 258.1°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3970C1
RGB	rgb(57, 112, 193)
HSL	hsl(216, 54%, 49%)
HSV	hsv(216, 70%, 76%)
CMYK	cmyk(70.5%, 42%, 0%, 24.3%)
CIE-LAB	lab(47.37, 9.12, -47.75)
CIE-LCH	lch(47.37, 48.61, 280.81°)
OKLab	oklab(54.89% -0.0287 -0.1364)
OKLCH	oklch(54.89% 0.139 258.1)
XYZ	xyz(17.1037, 16.3066, 52.6878)
Luminance	0.1631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3970C1 #C18A39

analogous

#39B4C1 #3970C1 #4639C1

triadic

#3970C1 #C13970 #70C139

tetradic

#3970C1 #C139B4 #C18A39 #39C146

square

#3970C1 #C139B4 #C18A39 #39C146

split-complementary

#3970C1 #C14639 #B4C139

monochromatic

#1D3963 #2B5592 #3970C1 #6691D2 #95B3E0

Accessibility & contrast

On white

4.93

#3970C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3970C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3970C1

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3970C1	#FFFFFF	#000000	##FFFFFF
##3970C1	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4977C4

Deuteranopia (green-blind)

#336BBF

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3970c1;
/* rgb */ color: rgb(57, 112, 193);
/* oklch */ color: oklch(54.9% 0.139 258.1);

Tailwind

colors: {
  custom: {
    50: '#7f98d4',
    500: '#3970c1',
    950: '#000000',
  },
}

SCSS

$custom: #3970c1;
$custom-light: #7f98d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3970c1",
  "rgb": {
    "r": 57,
    "g": 112,
    "b": 193
  },
  "hsl": {
    "h": 215.735,
    "s": 54.4,
    "l": 49.02
  },
  "oklch": {
    "l": 0.54892,
    "c": 0.13935,
    "h": 258.1
  },
  "luminance": 0.16308
}

Semantic roles & 50–950 ramp

primary

#3970C1

secondary

#CBB18B

accent

#A24ADE

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3970C1

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

Preview Lab → · Contrast checker → · Palette generator →