#3978AF#3978AF

#3978AF is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.7% C 0.108 H 247.5°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3978AF
RGB	rgb(57, 120, 175)
HSL	hsl(208, 51%, 45%)
HSV	hsv(208, 67%, 69%)
CMYK	cmyk(67.4%, 31.4%, 0%, 31.4%)
CIE-LAB	lab(48.76, -2.25, -35.15)
CIE-LCH	lch(48.76, 35.22, 266.34°)
OKLab	oklab(55.66% -0.0412 -0.0994)
OKLCH	oklch(55.66% 0.108 247.5)
XYZ	xyz(16.1388, 17.3963, 43.0564)
Luminance	0.1740 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978AF #AF7039

analogous

#39AFAB #3978AF #393DAF

triadic

#3978AF #AF3978 #78AF39

tetradic

#3978AF #AB39AF #AF7039 #3DAF39

square

#3978AF #AB39AF #AF7039 #3DAF39

split-complementary

#3978AF #AF393D #AFAB39

monochromatic

#1B3953 #2A5881 #3978AF #5B96CA #8AB4D9

Accessibility & contrast

On white

4.69

#3978AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#3978AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3978AF

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978AF	#FFFFFF	#000000	##FFFFFF
##3978AF	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607AB1

Deuteranopia (green-blind)

#4F6FAE

Tritanopia (blue-blind)

#00858C

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3978af;
/* rgb */ color: rgb(57, 120, 175);
/* oklch */ color: oklch(55.7% 0.108 247.5);

Tailwind

colors: {
  custom: {
    50: '#7c9ec7',
    500: '#3978af',
    950: '#000000',
  },
}

SCSS

$custom: #3978af;
$custom-light: #7c9ec7;
$custom-dark: #000000;

JSON

{
  "hex": "#3978af",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 175
  },
  "hsl": {
    "h": 207.966,
    "s": 50.862,
    "l": 45.49
  },
  "oklch": {
    "l": 0.55659,
    "c": 0.10759,
    "h": 247.5
  },
  "luminance": 0.17398
}

Semantic roles & 50–950 ramp

primary

#3978AF

secondary

#C3A081

accent

#8F4DDA

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3978AF

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

Preview Lab → · Contrast checker → · Palette generator →