#3978A4#3978A4

#3978A4 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.1% C 0.094 H 241.8°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3978A4
RGB	rgb(57, 120, 164)
HSL	hsl(205, 48%, 43%)
HSV	hsv(205, 65%, 64%)
CMYK	cmyk(65.2%, 26.8%, 0%, 35.7%)
CIE-LAB	lab(48.24, -6.07, -29.56)
CIE-LCH	lch(48.24, 30.18, 258.40°)
OKLab	oklab(55.08% -0.0447 -0.0832)
OKLCH	oklch(55.08% 0.094 241.8)
XYZ	xyz(15.1021, 16.9816, 37.5966)
Luminance	0.1698 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978A4 #A46539

analogous

#39A49A #3978A4 #3942A4

triadic

#3978A4 #A43978 #78A439

tetradic

#3978A4 #9A39A4 #A46539 #42A439

square

#3978A4 #9A39A4 #A46539 #42A439

split-complementary

#3978A4 #A43942 #A49A39

monochromatic

#193649 #295777 #3978A4 #5697C4 #83B3D4

Accessibility & contrast

On white

4.78

#3978A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#3978A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3978A4

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978A4	#FFFFFF	#000000	##FFFFFF
##3978A4	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6478A6

Deuteranopia (green-blind)

#566EA3

Tritanopia (blue-blind)

#008387

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3978a4;
/* rgb */ color: rgb(57, 120, 164);
/* oklch */ color: oklch(55.1% 0.094 241.8);

Tailwind

colors: {
  custom: {
    50: '#7a9ebf',
    500: '#3978a4',
    950: '#000000',
  },
}

SCSS

$custom: #3978a4;
$custom-light: #7a9ebf;
$custom-dark: #000000;

JSON

{
  "hex": "#3978a4",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 164
  },
  "hsl": {
    "h": 204.673,
    "s": 48.416,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55079,
    "c": 0.09442,
    "h": 241.8
  },
  "luminance": 0.16983
}

Semantic roles & 50–950 ramp

primary

#3978A4

secondary

#BE967B

accent

#8850D8

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3978A4

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

Preview Lab → · Contrast checker → · Palette generator →