#3978C6#3978C6

#3978C6 is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 57.0% C 0.137 H 255.2°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3978C6
RGB	rgb(57, 120, 198)
HSL	hsl(213, 55%, 50%)
HSV	hsv(213, 71%, 78%)
CMYK	cmyk(71.2%, 39.4%, 0%, 22.4%)
CIE-LAB	lab(49.95, 5.98, -46.51)
CIE-LCH	lch(49.95, 46.90, 277.32°)
OKLab	oklab(56.99% -0.0351 -0.1326)
OKLCH	oklch(56.99% 0.137 255.2)
XYZ	xyz(18.5931, 18.3780, 55.9825)
Luminance	0.1838 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978C6 #C68739

analogous

#39BFC6 #3978C6 #4039C6

triadic

#3978C6 #C63978 #78C639

tetradic

#3978C6 #C639BF #C68739 #39C640

square

#3978C6 #C639BF #C68739 #39C640

split-complementary

#3978C6 #C64039 #BFC639

monochromatic

#1E3E67 #2B5B96 #3978C6 #6998D4 #98B9E1

Accessibility & contrast

On white

4.49

#3978C6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#3978C6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3978C6

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978C6	#FFFFFF	#000000	##000000
##3978C6	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#547EC9

Deuteranopia (green-blind)

#3E71C4

Tritanopia (blue-blind)

#008A95

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3978c6;
/* rgb */ color: rgb(57, 120, 198);
/* oklch */ color: oklch(57.0% 0.137 255.2);

Tailwind

colors: {
  custom: {
    50: '#809ed8',
    500: '#3978c6',
    950: '#000000',
  },
}

SCSS

$custom: #3978c6;
$custom-light: #809ed8;
$custom-dark: #000000;

JSON

{
  "hex": "#3978c6",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 198
  },
  "hsl": {
    "h": 213.191,
    "s": 55.294,
    "l": 50
  },
  "oklch": {
    "l": 0.56986,
    "c": 0.13718,
    "h": 255.2
  },
  "luminance": 0.1838
}

Semantic roles & 50–950 ramp

primary

#3978C6

secondary

#CDB18E

accent

#9C49DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3978C6

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

Preview Lab → · Contrast checker → · Palette generator →