#3971B6#3971B6

#3971B6 is a mid, vivid cyan. Relative luminance 0.161; OKLCH L 54.4% C 0.123 H 254.9°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3971B6
RGB	rgb(57, 113, 182)
HSL	hsl(213, 52%, 47%)
HSV	hsv(213, 69%, 71%)
CMYK	cmyk(68.7%, 37.9%, 0%, 28.6%)
CIE-LAB	lab(47.05, 4.51, -41.91)
CIE-LCH	lch(47.05, 42.15, 276.14°)
OKLab	oklab(54.44% -0.0321 -0.1192)
OKLCH	oklch(54.44% 0.123 254.9)
XYZ	xyz(16.0329, 16.0559, 46.5010)
Luminance	0.1606 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3971B6 #B67E39

analogous

#39B0B6 #3971B6 #4039B6

triadic

#3971B6 #B63971 #71B639

tetradic

#3971B6 #B639B0 #B67E39 #39B640

square

#3971B6 #B639B0 #B67E39 #39B640

split-complementary

#3971B6 #B64039 #B0B639

monochromatic

#1C3759 #2A5487 #3971B6 #5F90CD #8EB1DC

Accessibility & contrast

On white

4.99

#3971B6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.21

#3971B6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3971B6

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3971B6	#FFFFFF	#000000	##FFFFFF
##3971B6	1.00	4.99	4.21	4.99
#FFFFFF	4.99	1.00	21.00	1.00
#000000	4.21	21.00	1.00	21.00
##FFFFFF	4.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5276B9

Deuteranopia (green-blind)

#406AB5

Tritanopia (blue-blind)

#00818B

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3971b6;
/* rgb */ color: rgb(57, 113, 182);
/* oklch */ color: oklch(54.4% 0.123 254.9);

Tailwind

colors: {
  custom: {
    50: '#7d99cc',
    500: '#3971b6',
    950: '#000000',
  },
}

SCSS

$custom: #3971b6;
$custom-light: #7d99cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3971b6",
  "rgb": {
    "r": 57,
    "g": 113,
    "b": 182
  },
  "hsl": {
    "h": 213.12,
    "s": 52.301,
    "l": 46.863
  },
  "oklch": {
    "l": 0.54439,
    "c": 0.12348,
    "h": 254.9
  },
  "luminance": 0.16058
}

Semantic roles & 50–950 ramp

primary

#3971B6

secondary

#C6A985

accent

#9B4CDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3971B6

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

Preview Lab → · Contrast checker → · Palette generator →