#3978C8#3978C8

#3978C8 is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 57.1% C 0.140 H 255.7°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3978C8
RGB	rgb(57, 120, 200)
HSL	hsl(214, 57%, 50%)
HSV	hsv(214, 72%, 78%)
CMYK	cmyk(71.5%, 40%, 0%, 21.6%)
CIE-LAB	lab(50.06, 6.70, -47.48)
CIE-LCH	lch(50.06, 47.95, 278.04°)
OKLab	oklab(57.11% -0.0346 -0.1354)
OKLCH	oklch(57.11% 0.14 255.7)
XYZ	xyz(18.8253, 18.4709, 57.2055)
Luminance	0.1847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978C8 #C88939

analogous

#39C0C8 #3978C8 #4139C8

triadic

#3978C8 #C83978 #78C839

tetradic

#3978C8 #C839C0 #C88939 #39C841

square

#3978C8 #C839C0 #C88939 #39C841

split-complementary

#3978C8 #C84139 #C0C839

monochromatic

#1D3F69 #2B5B99 #3978C8 #6999D5 #99B9E3

Accessibility & contrast

On white

4.47

#3978C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#3978C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3978C8

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978C8	#FFFFFF	#000000	##000000
##3978C8	1.00	4.47	4.69	4.69
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#537ECB

Deuteranopia (green-blind)

#3C71C6

Tritanopia (blue-blind)

#008B96

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3978c8;
/* rgb */ color: rgb(57, 120, 200);
/* oklch */ color: oklch(57.1% 0.140 255.7);

Tailwind

colors: {
  custom: {
    50: '#819ed9',
    500: '#3978c8',
    950: '#000000',
  },
}

SCSS

$custom: #3978c8;
$custom-light: #819ed9;
$custom-dark: #000000;

JSON

{
  "hex": "#3978c8",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 200
  },
  "hsl": {
    "h": 213.566,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.57108,
    "c": 0.1398,
    "h": 255.7
  },
  "luminance": 0.18473
}

Semantic roles & 50–950 ramp

primary

#3978C8

secondary

#CEB28F

accent

#9D48E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3978C8

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

Preview Lab → · Contrast checker → · Palette generator →