#3378DB#3378DB

#3378DB is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.1% C 0.167 H 258.0°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3378DB
RGB	rgb(51, 120, 219)
HSL	hsl(215, 70%, 53%)
HSV	hsv(215, 77%, 86%)
CMYK	cmyk(76.7%, 45.2%, 0%, 14.1%)
CIE-LAB	lab(50.98, 12.92, -56.82)
CIE-LCH	lch(50.98, 58.27, 282.81°)
OKLab	oklab(58.12% -0.0347 -0.163)
OKLCH	oklch(58.12% 0.167 258)
XYZ	xyz(20.8632, 19.2488, 69.6199)
Luminance	0.1925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378DB #DB9633

analogous

#33CCDB #3378DB #4233DB

triadic

#3378DB #DB3378 #78DB33

tetradic

#3378DB #DB33CC #DB9633 #33DB42

square

#3378DB #DB33CC #DB9633 #33DB42

split-complementary

#3378DB #DB4233 #CCDB33

monochromatic

#16417D #1F5BB1 #3378DB #679AE4 #9BBDED

Accessibility & contrast

On white

4.33

#3378DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#3378DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3378DB

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378DB	#FFFFFF	#000000	##000000
##3378DB	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4482DF

Deuteranopia (green-blind)

#1D72D9

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3378db;
/* rgb */ color: rgb(51, 120, 219);
/* oklch */ color: oklch(58.1% 0.167 258.0);

Tailwind

colors: {
  custom: {
    50: '#829ee7',
    500: '#3378db',
    950: '#000000',
  },
}

SCSS

$custom: #3378db;
$custom-light: #829ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#3378db",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 219
  },
  "hsl": {
    "h": 215.357,
    "s": 70,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58121,
    "c": 0.16664,
    "h": 258
  },
  "luminance": 0.19251
}

Semantic roles & 50–950 ramp

primary

#3378DB

secondary

#D9BB91

accent

#A43BED

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3378DB

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

Preview Lab → · Contrast checker → · Palette generator →