#3978CA#3978CA

#3978CA is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.2% C 0.142 H 256.1°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3978CA
RGB	rgb(57, 120, 202)
HSL	hsl(214, 58%, 51%)
HSV	hsv(214, 72%, 79%)
CMYK	cmyk(71.8%, 40.6%, 0%, 20.8%)
CIE-LAB	lab(50.17, 7.43, -48.45)
CIE-LCH	lch(50.17, 49.01, 278.72°)
OKLab	oklab(57.23% -0.0342 -0.1383)
OKLCH	oklch(57.23% 0.142 256.1)
XYZ	xyz(19.0606, 18.5650, 58.4445)
Luminance	0.1857 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978CA #CA8B39

analogous

#39C0CA #3978CA #4239CA

triadic

#3978CA #CA3978 #78CA39

tetradic

#3978CA #CA39C0 #CA8B39 #39CA42

square

#3978CA #CA39C0 #CA8B39 #39CA42

split-complementary

#3978CA #CA4239 #C0CA39

monochromatic

#1D3F6C #2A5B9C #3978CA #6999D7 #9ABAE4

Accessibility & contrast

On white

4.46

#3978CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#3978CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3978CA

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978CA	#FFFFFF	#000000	##000000
##3978CA	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#517FCD

Deuteranopia (green-blind)

#3A71C8

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3978ca;
/* rgb */ color: rgb(57, 120, 202);
/* oklch */ color: oklch(57.2% 0.142 256.1);

Tailwind

colors: {
  custom: {
    50: '#819eda',
    500: '#3978ca',
    950: '#000000',
  },
}

SCSS

$custom: #3978ca;
$custom-light: #819eda;
$custom-dark: #000000;

JSON

{
  "hex": "#3978ca",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 202
  },
  "hsl": {
    "h": 213.931,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.57232,
    "c": 0.14244,
    "h": 256.1
  },
  "luminance": 0.18567
}

Semantic roles & 50–950 ramp

primary

#3978CA

secondary

#D0B48F

accent

#9E47E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3978CA

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

Preview Lab → · Contrast checker → · Palette generator →