#3978AC#3978AC

#3978AC is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.5% C 0.104 H 246.1°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3978AC
RGB	rgb(57, 120, 172)
HSL	hsl(207, 50%, 45%)
HSV	hsv(207, 67%, 67%)
CMYK	cmyk(66.9%, 30.2%, 0%, 32.5%)
CIE-LAB	lab(48.61, -3.30, -33.64)
CIE-LCH	lch(48.61, 33.80, 264.40°)
OKLab	oklab(55.5% -0.0421 -0.095)
OKLCH	oklch(55.5% 0.104 246.1)
XYZ	xyz(15.8474, 17.2797, 41.5219)
Luminance	0.1728 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978AC #AC6D39

analogous

#39ACA6 #3978AC #393FAC

triadic

#3978AC #AC3978 #78AC39

tetradic

#3978AC #A639AC #AC6D39 #3FAC39

square

#3978AC #A639AC #AC6D39 #3FAC39

split-complementary

#3978AC #AC393F #ACA639

monochromatic

#1B3850 #2A587E #3978AC #5A96C8 #88B4D8

Accessibility & contrast

On white

4.71

#3978AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3978AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3978AC

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

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

Color blindness preview

Protanopia (red-blind)

#617AAE

Deuteranopia (green-blind)

#516EAB

Tritanopia (blue-blind)

#00848A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3978ac;
/* rgb */ color: rgb(57, 120, 172);
/* oklch */ color: oklch(55.5% 0.104 246.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3978ac",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 172
  },
  "hsl": {
    "h": 207.13,
    "s": 50.218,
    "l": 44.902
  },
  "oklch": {
    "l": 0.55497,
    "c": 0.10391,
    "h": 246.1
  },
  "luminance": 0.17281
}

Semantic roles & 50–950 ramp

primary

#3978AC

secondary

#C29D7F

accent

#8D4EDA

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3978AC

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

Preview Lab → · Contrast checker → · Palette generator →