#3978C0#3978C0

#3978C0 is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.6% C 0.129 H 253.6°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3978C0
RGB	rgb(57, 120, 192)
HSL	hsl(212, 54%, 49%)
HSV	hsv(212, 70%, 75%)
CMYK	cmyk(70.3%, 37.5%, 0%, 24.7%)
CIE-LAB	lab(49.63, 3.81, -43.59)
CIE-LCH	lch(49.63, 43.76, 274.99°)
OKLab	oklab(56.63% -0.0365 -0.1241)
OKLCH	oklch(56.63% 0.129 253.6)
XYZ	xyz(17.9147, 18.1067, 52.4097)
Luminance	0.1811 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978C0 #C08139

analogous

#39BCC0 #3978C0 #3E39C0

triadic

#3978C0 #C03978 #78C039

tetradic

#3978C0 #C039BC #C08139 #39C03E

square

#3978C0 #C039BC #C08139 #39C03E

split-complementary

#3978C0 #C03E39 #BCC039

monochromatic

#1D3D62 #2B5B91 #3978C0 #6597D1 #94B7DF

Accessibility & contrast

On white

4.54

#3978C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#3978C0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3978C0

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978C0	#FFFFFF	#000000	##000000
##3978C0	1.00	4.54	4.62	4.62
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577DC3

Deuteranopia (green-blind)

#4370BF

Tritanopia (blue-blind)

#008993

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3978c0;
/* rgb */ color: rgb(57, 120, 192);
/* oklch */ color: oklch(56.6% 0.129 253.6);

Tailwind

colors: {
  custom: {
    50: '#7f9ed3',
    500: '#3978c0',
    950: '#000000',
  },
}

SCSS

$custom: #3978c0;
$custom-light: #7f9ed3;
$custom-dark: #000000;

JSON

{
  "hex": "#3978c0",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 192
  },
  "hsl": {
    "h": 212,
    "s": 54.217,
    "l": 48.824
  },
  "oklch": {
    "l": 0.56626,
    "c": 0.12932,
    "h": 253.6
  },
  "luminance": 0.18109
}

Semantic roles & 50–950 ramp

primary

#3978C0

secondary

#CBAD8A

accent

#994ADE

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3978C0

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

Preview Lab → · Contrast checker → · Palette generator →