#3971AB#3971AB

#3971AB is a mid, moderate cyan. Relative luminance 0.156; OKLCH L 53.8% C 0.109 H 251.2°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#3971AB
RGB	rgb(57, 113, 171)
HSL	hsl(211, 50%, 45%)
HSV	hsv(211, 67%, 67%)
CMYK	cmyk(66.7%, 33.9%, 0%, 32.9%)
CIE-LAB	lab(46.47, 0.57, -36.42)
CIE-LCH	lch(46.47, 36.42, 270.90°)
OKLab	oklab(53.8% -0.035 -0.1032)
OKLCH	oklch(53.8% 0.109 251.2)
XYZ	xyz(14.9404, 15.6189, 40.7476)
Luminance	0.1562 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3971AB #AB7339

analogous

#39AAAB #3971AB #3A39AB

triadic

#3971AB #AB3971 #71AB39

tetradic

#3971AB #AB39AA #AB7339 #39AB3A

square

#3971AB #AB39AA #AB7339 #39AB3A

split-complementary

#3971AB #AB3A39 #AAAB39

monochromatic

#1A344F #2A537D #3971AB #5990C8 #87AFD7

Accessibility & contrast

On white

5.09

#3971AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#3971AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3971AB

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3971AB	#FFFFFF	#000000	##FFFFFF
##3971AB	1.00	5.09	4.12	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5874AD

Deuteranopia (green-blind)

#4869AA

Tritanopia (blue-blind)

#007F86

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3971ab;
/* rgb */ color: rgb(57, 113, 171);
/* oklch */ color: oklch(53.8% 0.109 251.2);

Tailwind

colors: {
  custom: {
    50: '#7b99c4',
    500: '#3971ab',
    950: '#000000',
  },
}

SCSS

$custom: #3971ab;
$custom-light: #7b99c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3971ab",
  "rgb": {
    "r": 57,
    "g": 113,
    "b": 171
  },
  "hsl": {
    "h": 210.526,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.53799,
    "c": 0.10896,
    "h": 251.2
  },
  "luminance": 0.1562
}

Semantic roles & 50–950 ramp

primary

#3971AB

secondary

#C1A07F

accent

#954EDA

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #3971AB

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

Preview Lab → · Contrast checker → · Palette generator →