#3379DD#3379DD

#3379DD is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.5% C 0.168 H 257.9°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3379DD
RGB	rgb(51, 121, 221)
HSL	hsl(215, 71%, 53%)
HSV	hsv(215, 77%, 87%)
CMYK	cmyk(76.9%, 45.2%, 0%, 13.3%)
CIE-LAB	lab(51.38, 13.04, -57.31)
CIE-LCH	lch(51.38, 58.77, 282.82°)
OKLab	oklab(58.47% -0.0351 -0.1644)
OKLCH	oklch(58.47% 0.168 257.9)
XYZ	xyz(21.2490, 19.5965, 71.0552)
Luminance	0.1960 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3379DD #DD9733

analogous

#33CEDD #3379DD #4233DD

triadic

#3379DD #DD3379 #79DD33

tetradic

#3379DD #DD33CE #DD9733 #33DD42

square

#3379DD #DD33CE #DD9733 #33DD42

split-complementary

#3379DD #DD4233 #CEDD33

monochromatic

#154180 #1E5CB5 #3379DD #679BE6 #9CBEEE

Accessibility & contrast

On white

4.27

#3379DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#3379DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3379DD

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3379DD	#FFFFFF	#000000	##000000
##3379DD	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4483E1

Deuteranopia (green-blind)

#1C73DB

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3379dd;
/* rgb */ color: rgb(51, 121, 221);
/* oklch */ color: oklch(58.5% 0.168 257.9);

Tailwind

colors: {
  custom: {
    50: '#839fe8',
    500: '#3379dd',
    950: '#000000',
  },
}

SCSS

$custom: #3379dd;
$custom-light: #839fe8;
$custom-dark: #000000;

JSON

{
  "hex": "#3379dd",
  "rgb": {
    "r": 51,
    "g": 121,
    "b": 221
  },
  "hsl": {
    "h": 215.294,
    "s": 71.429,
    "l": 53.333
  },
  "oklch": {
    "l": 0.5847,
    "c": 0.1681,
    "h": 257.9
  },
  "luminance": 0.19599
}

Semantic roles & 50–950 ramp

primary

#3379DD

secondary

#DABC91

accent

#A43AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3379DD

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

Preview Lab → · Contrast checker → · Palette generator →