#3971B1#3971B1

#3971B1 is a mid, moderate cyan. Relative luminance 0.159; OKLCH L 54.1% C 0.117 H 253.4°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#3971B1
RGB	rgb(57, 113, 177)
HSL	hsl(212, 51%, 46%)
HSV	hsv(212, 68%, 69%)
CMYK	cmyk(67.8%, 36.2%, 0%, 30.6%)
CIE-LAB	lab(46.78, 2.71, -39.43)
CIE-LCH	lch(46.78, 39.52, 273.94°)
OKLab	oklab(54.14% -0.0334 -0.112)
OKLCH	oklch(54.14% 0.117 253.4)
XYZ	xyz(15.5254, 15.8528, 43.8282)
Luminance	0.1585 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3971B1 #B17939

analogous

#39ADB1 #3971B1 #3D39B1

triadic

#3971B1 #B13971 #71B139

tetradic

#3971B1 #B139AD #B17939 #39B13D

square

#3971B1 #B139AD #B17939 #39B13D

split-complementary

#3971B1 #B13D39 #ADB139

monochromatic

#1B3654 #2A5383 #3971B1 #5D90CB #8BB0DA

Accessibility & contrast

On white

5.04

#3971B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#3971B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3971B1

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3971B1	#FFFFFF	#000000	##FFFFFF
##3971B1	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5575B4

Deuteranopia (green-blind)

#436AB0

Tritanopia (blue-blind)

#008088

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3971b1;
/* rgb */ color: rgb(57, 113, 177);
/* oklch */ color: oklch(54.1% 0.117 253.4);

Tailwind

colors: {
  custom: {
    50: '#7c99c8',
    500: '#3971b1',
    950: '#000000',
  },
}

SCSS

$custom: #3971b1;
$custom-light: #7c99c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3971b1",
  "rgb": {
    "r": 57,
    "g": 113,
    "b": 177
  },
  "hsl": {
    "h": 212,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.54143,
    "c": 0.11683,
    "h": 253.4
  },
  "luminance": 0.15854
}

Semantic roles & 50–950 ramp

primary

#3971B1

secondary

#C4A582

accent

#994DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3971B1

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

Preview Lab → · Contrast checker → · Palette generator →