#3978AD#3978AD

#3978AD is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.6% C 0.105 H 246.6°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3978AD
RGB	rgb(57, 120, 173)
HSL	hsl(207, 50%, 45%)
HSV	hsv(207, 67%, 68%)
CMYK	cmyk(67.1%, 30.6%, 0%, 32.2%)
CIE-LAB	lab(48.66, -2.95, -34.14)
CIE-LCH	lch(48.66, 34.27, 265.07°)
OKLab	oklab(55.55% -0.0418 -0.0965)
OKLCH	oklch(55.55% 0.105 246.6)
XYZ	xyz(15.9438, 17.3183, 42.0296)
Luminance	0.1732 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978AD #AD6E39

analogous

#39ADA8 #3978AD #393EAD

triadic

#3978AD #AD3978 #78AD39

tetradic

#3978AD #A839AD #AD6E39 #3EAD39

square

#3978AD #A839AD #AD6E39 #3EAD39

split-complementary

#3978AD #AD393E #ADA839

monochromatic

#1B3851 #2A587F #3978AD #5A96C9 #88B4D8

Accessibility & contrast

On white

4.70

#3978AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3978AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3978AD

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978AD	#FFFFFF	#000000	##FFFFFF
##3978AD	1.00	4.70	4.46	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#617AAF

Deuteranopia (green-blind)

#516FAC

Tritanopia (blue-blind)

#00858B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3978ad;
/* rgb */ color: rgb(57, 120, 173);
/* oklch */ color: oklch(55.6% 0.105 246.6);

Tailwind

colors: {
  custom: {
    50: '#7c9ec5',
    500: '#3978ad',
    950: '#000000',
  },
}

SCSS

$custom: #3978ad;
$custom-light: #7c9ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#3978ad",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 173
  },
  "hsl": {
    "h": 207.414,
    "s": 50.435,
    "l": 45.098
  },
  "oklch": {
    "l": 0.55551,
    "c": 0.10513,
    "h": 246.6
  },
  "luminance": 0.1732
}

Semantic roles & 50–950 ramp

primary

#3978AD

secondary

#C29E80

accent

#8E4EDA

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3978AD

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

Preview Lab → · Contrast checker → · Palette generator →