#3970C3#3970C3

#3970C3 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.0% C 0.142 H 258.5°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3970C3
RGB	rgb(57, 112, 195)
HSL	hsl(216, 55%, 49%)
HSV	hsv(216, 71%, 76%)
CMYK	cmyk(70.8%, 42.6%, 0%, 23.5%)
CIE-LAB	lab(47.49, 9.85, -48.72)
CIE-LCH	lch(47.49, 49.70, 281.43°)
OKLab	oklab(55.02% -0.0282 -0.1392)
OKLCH	oklch(55.02% 0.142 258.5)
XYZ	xyz(17.3283, 16.3965, 53.8708)
Luminance	0.1640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3970C3 #C38C39

analogous

#39B5C3 #3970C3 #4739C3

triadic

#3970C3 #C33970 #70C339

tetradic

#3970C3 #C339B5 #C38C39 #39C347

square

#3970C3 #C339B5 #C38C39 #39C347

split-complementary

#3970C3 #C34739 #B5C339

monochromatic

#1D3A64 #2B5594 #3970C3 #6792D2 #96B4E0

Accessibility & contrast

On white

4.91

#3970C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3970C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3970C3

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3970C3	#FFFFFF	#000000	##FFFFFF
##3970C3	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4878C6

Deuteranopia (green-blind)

#306BC1

Tritanopia (blue-blind)

#008390

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3970c3;
/* rgb */ color: rgb(57, 112, 195);
/* oklch */ color: oklch(55.0% 0.142 258.5);

Tailwind

colors: {
  custom: {
    50: '#8098d6',
    500: '#3970c3',
    950: '#000000',
  },
}

SCSS

$custom: #3970c3;
$custom-light: #8098d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3970c3",
  "rgb": {
    "r": 57,
    "g": 112,
    "b": 195
  },
  "hsl": {
    "h": 216.087,
    "s": 54.762,
    "l": 49.412
  },
  "oklch": {
    "l": 0.5502,
    "c": 0.14205,
    "h": 258.5
  },
  "luminance": 0.16398
}

Semantic roles & 50–950 ramp

primary

#3970C3

secondary

#CCB28C

accent

#A34ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3970C3

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

Preview Lab → · Contrast checker → · Palette generator →