#3970BC#3970BC

#3970BC is a mid, vivid cyan. Relative luminance 0.161; OKLCH L 54.6% C 0.133 H 257.0°. Best body text is #FFFFFF at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#3970BC
RGB	rgb(57, 112, 188)
HSL	hsl(215, 53%, 48%)
HSV	hsv(215, 70%, 74%)
CMYK	cmyk(69.7%, 40.4%, 0%, 26.3%)
CIE-LAB	lab(47.09, 7.30, -45.32)
CIE-LCH	lch(47.09, 45.90, 279.15°)
OKLab	oklab(54.58% -0.0297 -0.1292)
OKLCH	oklch(54.58% 0.133 257)
XYZ	xyz(16.5553, 16.0873, 49.7999)
Luminance	0.1609 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3970BC #BC8539

analogous

#39B1BC #3970BC #4339BC

triadic

#3970BC #BC3970 #70BC39

tetradic

#3970BC #BC39B1 #BC8539 #39BC43

square

#3970BC #BC39B1 #BC8539 #39BC43

split-complementary

#3970BC #BC4339 #B1BC39

monochromatic

#1D385E #2B548D #3970BC #6390D0 #92B2DE

Accessibility & contrast

On white

4.98

#3970BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#3970BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3970BC

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3970BC	#FFFFFF	#000000	##FFFFFF
##3970BC	1.00	4.98	4.22	4.98
#FFFFFF	4.98	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D76BF

Deuteranopia (green-blind)

#386ABA

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3970bc;
/* rgb */ color: rgb(57, 112, 188);
/* oklch */ color: oklch(54.6% 0.133 257.0);

Tailwind

colors: {
  custom: {
    50: '#7e98d0',
    500: '#3970bc',
    950: '#000000',
  },
}

SCSS

$custom: #3970bc;
$custom-light: #7e98d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3970bc",
  "rgb": {
    "r": 57,
    "g": 112,
    "b": 188
  },
  "hsl": {
    "h": 214.809,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.54578,
    "c": 0.13262,
    "h": 257
  },
  "luminance": 0.16089
}

Semantic roles & 50–950 ramp

primary

#3970BC

secondary

#C9AE88

accent

#A04BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3970BC

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

Preview Lab → · Contrast checker → · Palette generator →