#3970B7#3970B7

#3970B7 is a mid, vivid cyan. Relative luminance 0.159; OKLCH L 54.3% C 0.126 H 255.8°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#3970B7
RGB	rgb(57, 112, 183)
HSL	hsl(214, 53%, 47%)
HSV	hsv(214, 69%, 72%)
CMYK	cmyk(68.9%, 38.8%, 0%, 28.2%)
CIE-LAB	lab(46.81, 5.49, -42.87)
CIE-LCH	lch(46.81, 43.22, 277.30°)
OKLab	oklab(54.27% -0.0309 -0.122)
OKLCH	oklch(54.27% 0.126 255.8)
XYZ	xyz(16.0256, 15.8754, 47.0103)
Luminance	0.1588 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3970B7 #B78039

analogous

#39AFB7 #3970B7 #4139B7

triadic

#3970B7 #B73970 #70B739

tetradic

#3970B7 #B739AF #B78039 #39B741

square

#3970B7 #B739AF #B78039 #39B741

split-complementary

#3970B7 #B74139 #AFB739

monochromatic

#1C375A #2A5388 #3970B7 #6090CD #8EB0DC

Accessibility & contrast

On white

5.03

#3970B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#3970B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3970B7

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3970B7	#FFFFFF	#000000	##FFFFFF
##3970B7	1.00	5.03	4.18	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5075BA

Deuteranopia (green-blind)

#3D6AB6

Tritanopia (blue-blind)

#00808A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3970b7;
/* rgb */ color: rgb(57, 112, 183);
/* oklch */ color: oklch(54.3% 0.126 255.8);

Tailwind

colors: {
  custom: {
    50: '#7d98cd',
    500: '#3970b7',
    950: '#000000',
  },
}

SCSS

$custom: #3970b7;
$custom-light: #7d98cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3970b7",
  "rgb": {
    "r": 57,
    "g": 112,
    "b": 183
  },
  "hsl": {
    "h": 213.81,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.54272,
    "c": 0.12589,
    "h": 255.8
  },
  "luminance": 0.15877
}

Semantic roles & 50–950 ramp

primary

#3970B7

secondary

#C7AA85

accent

#9D4CDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3970B7

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

Preview Lab → · Contrast checker → · Palette generator →