#3971B9#3971B9

#3971B9 is a mid, vivid cyan. Relative luminance 0.162; OKLCH L 54.6% C 0.127 H 255.7°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3971B9
RGB	rgb(57, 113, 185)
HSL	hsl(214, 53%, 47%)
HSV	hsv(214, 69%, 73%)
CMYK	cmyk(69.2%, 38.9%, 0%, 27.5%)
CIE-LAB	lab(47.21, 5.59, -43.39)
CIE-LCH	lch(47.21, 43.75, 277.34°)
OKLab	oklab(54.62% -0.0314 -0.1236)
OKLCH	oklch(54.62% 0.127 255.7)
XYZ	xyz(16.3462, 16.1812, 48.1513)
Luminance	0.1618 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3971B9 #B98139

analogous

#39B1B9 #3971B9 #4139B9

triadic

#3971B9 #B93971 #71B939

tetradic

#3971B9 #B939B1 #B98139 #39B941

square

#3971B9 #B939B1 #B98139 #39B941

split-complementary

#3971B9 #B94139 #B1B939

monochromatic

#1C385B #2B548A #3971B9 #6191CE #90B1DD

Accessibility & contrast

On white

4.96

#3971B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#3971B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3971B9

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3971B9	#FFFFFF	#000000	##FFFFFF
##3971B9	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5076BC

Deuteranopia (green-blind)

#3D6AB8

Tritanopia (blue-blind)

#00828C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3971b9;
/* rgb */ color: rgb(57, 113, 185);
/* oklch */ color: oklch(54.6% 0.127 255.7);

Tailwind

colors: {
  custom: {
    50: '#7e99ce',
    500: '#3971b9',
    950: '#000000',
  },
}

SCSS

$custom: #3971b9;
$custom-light: #7e99ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3971b9",
  "rgb": {
    "r": 57,
    "g": 113,
    "b": 185
  },
  "hsl": {
    "h": 213.75,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.54619,
    "c": 0.12748,
    "h": 255.7
  },
  "luminance": 0.16183
}

Semantic roles & 50–950 ramp

primary

#3971B9

secondary

#C8AB86

accent

#9D4BDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3971B9

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

Preview Lab → · Contrast checker → · Palette generator →