#3F78DA#3F78DA

#3F78DA is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.5% C 0.162 H 260.5°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F78DA
RGB	rgb(63, 120, 218)
HSL	hsl(218, 68%, 55%)
HSV	hsv(218, 71%, 85%)
CMYK	cmyk(71.1%, 45%, 0%, 14.5%)
CIE-LAB	lab(51.32, 14.07, -55.68)
CIE-LCH	lch(51.32, 57.43, 284.18°)
OKLab	oklab(58.48% -0.0268 -0.1594)
OKLCH	oklch(58.48% 0.162 260.5)
XYZ	xyz(21.4167, 19.5494, 68.9608)
Luminance	0.1955 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F78DA #DAA13F

analogous

#3FC6DA #3F78DA #533FDA

triadic

#3F78DA #DA3F78 #78DA3F

tetradic

#3F78DA #DA3FC6 #DAA13F #3FDA53

square

#3F78DA #DA3FC6 #DAA13F #3FDA53

split-complementary

#3F78DA #DA533F #C6DA3F

monochromatic

#1A4185 #245AB8 #3F78DA #729CE4 #A6C0EE

Accessibility & contrast

On white

4.28

#3F78DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3F78DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F78DA

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F78DA	#FFFFFF	#000000	##000000
##3F78DA	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4682DE

Deuteranopia (green-blind)

#2774D8

Tritanopia (blue-blind)

#008F9E

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f78da;
/* rgb */ color: rgb(63, 120, 218);
/* oklch */ color: oklch(58.5% 0.162 260.5);

Tailwind

colors: {
  custom: {
    50: '#869ee6',
    500: '#3f78da',
    950: '#000000',
  },
}

SCSS

$custom: #3f78da;
$custom-light: #869ee6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f78da",
  "rgb": {
    "r": 63,
    "g": 120,
    "b": 218
  },
  "hsl": {
    "h": 217.935,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58483,
    "c": 0.16168,
    "h": 260.5
  },
  "luminance": 0.19552
}

Semantic roles & 50–950 ramp

primary

#3F78DA

secondary

#DBC39A

accent

#AB3DEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3F78DA

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

Preview Lab → · Contrast checker → · Palette generator →