#3F78AD#3F78AD

#3F78AD is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.102 H 248.6°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F78AD
RGB	rgb(63, 120, 173)
HSL	hsl(209, 47%, 46%)
HSV	hsv(209, 64%, 68%)
CMYK	cmyk(63.6%, 30.6%, 0%, 32.2%)
CIE-LAB	lab(48.89, -1.87, -33.76)
CIE-LCH	lch(48.89, 33.81, 266.83°)
OKLab	oklab(55.8% -0.0374 -0.0953)
OKLCH	oklch(55.8% 0.102 248.6)
XYZ	xyz(16.3064, 17.5053, 42.0466)
Luminance	0.1751 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F78AD #AD743F

analogous

#3FADAB #3F78AD #3F41AD

triadic

#3F78AD #AD3F78 #78AD3F

tetradic

#3F78AD #AB3FAD #AD743F #41AD3F

square

#3F78AD #AB3FAD #AD743F #41AD3F

split-complementary

#3F78AD #AD3F41 #ADAB3F

monochromatic

#1E3A53 #2F5980 #3F78AD #6396C6 #90B4D7

Accessibility & contrast

On white

4.67

#3F78AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3F78AD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F78AD

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F78AD	#FFFFFF	#000000	##FFFFFF
##3F78AD	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#617AAF

Deuteranopia (green-blind)

#526FAC

Tritanopia (blue-blind)

#00848B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3f78ad;
/* rgb */ color: rgb(63, 120, 173);
/* oklch */ color: oklch(55.8% 0.102 248.6);

Tailwind

colors: {
  custom: {
    50: '#7f9ec5',
    500: '#3f78ad',
    950: '#000000',
  },
}

SCSS

$custom: #3f78ad;
$custom-light: #7f9ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f78ad",
  "rgb": {
    "r": 63,
    "g": 120,
    "b": 173
  },
  "hsl": {
    "h": 208.909,
    "s": 46.61,
    "l": 46.275
  },
  "oklch": {
    "l": 0.55798,
    "c": 0.10237,
    "h": 248.6
  },
  "luminance": 0.17507
}

Semantic roles & 50–950 ramp

primary

#3F78AD

secondary

#C2A386

accent

#9152D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F78AD

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

Preview Lab → · Contrast checker → · Palette generator →