#3978AA#3978AA

#3978AA is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.4% C 0.101 H 245.1°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3978AA
RGB	rgb(57, 120, 170)
HSL	hsl(207, 50%, 45%)
HSV	hsv(207, 66%, 67%)
CMYK	cmyk(66.5%, 29.4%, 0%, 33.3%)
CIE-LAB	lab(48.52, -3.99, -32.62)
CIE-LCH	lch(48.52, 32.87, 263.02°)
OKLab	oklab(55.39% -0.0427 -0.0921)
OKLCH	oklch(55.39% 0.101 245.1)
XYZ	xyz(15.6568, 17.2035, 40.5179)
Luminance	0.1721 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978AA #AA6B39

analogous

#39AAA4 #3978AA #393FAA

triadic

#3978AA #AA3978 #78AA39

tetradic

#3978AA #A439AA #AA6B39 #3FAA39

square

#3978AA #A439AA #AA6B39 #3FAA39

split-complementary

#3978AA #AA393F #AAA439

monochromatic

#1A374E #2A587C #3978AA #5996C7 #87B3D7

Accessibility & contrast

On white

4.73

#3978AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3978AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3978AA

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978AA	#FFFFFF	#000000	##FFFFFF
##3978AA	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6279AC

Deuteranopia (green-blind)

#526EA9

Tritanopia (blue-blind)

#00848A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3978aa;
/* rgb */ color: rgb(57, 120, 170);
/* oklch */ color: oklch(55.4% 0.101 245.1);

Tailwind

colors: {
  custom: {
    50: '#7b9ec3',
    500: '#3978aa',
    950: '#000000',
  },
}

SCSS

$custom: #3978aa;
$custom-light: #7b9ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#3978aa",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 170
  },
  "hsl": {
    "h": 206.549,
    "s": 49.78,
    "l": 44.51
  },
  "oklch": {
    "l": 0.55391,
    "c": 0.10148,
    "h": 245.1
  },
  "luminance": 0.17205
}

Semantic roles & 50–950 ramp

primary

#3978AA

secondary

#C19C7E

accent

#8C4ED9

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3978AA

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

Preview Lab → · Contrast checker → · Palette generator →