#3378DE#3378DE

#3378DE is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.3% C 0.171 H 258.4°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3378DE
RGB	rgb(51, 120, 222)
HSL	hsl(216, 72%, 54%)
HSV	hsv(216, 77%, 87%)
CMYK	cmyk(77%, 45.9%, 0%, 12.9%)
CIE-LAB	lab(51.16, 14.03, -58.22)
CIE-LCH	lch(51.16, 59.89, 283.55°)
OKLab	oklab(58.32% -0.0341 -0.1671)
OKLCH	oklch(58.32% 0.171 258.4)
XYZ	xyz(21.2617, 19.4082, 71.7187)
Luminance	0.1941 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378DE #DE9933

analogous

#33CEDE #3378DE #4333DE

triadic

#3378DE #DE3378 #78DE33

tetradic

#3378DE #DE33CE #DE9933 #33DE43

square

#3378DE #DE33CE #DE9933 #33DE43

split-complementary

#3378DE #DE4333 #CEDE33

monochromatic

#154182 #1D5BB6 #3378DE #689BE7 #9CBEEF

Accessibility & contrast

On white

4.30

#3378DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#3378DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3378DE

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378DE	#FFFFFF	#000000	##000000
##3378DE	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4182E2

Deuteranopia (green-blind)

#1573DC

Tritanopia (blue-blind)

#0090A0

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3378de;
/* rgb */ color: rgb(51, 120, 222);
/* oklch */ color: oklch(58.3% 0.171 258.4);

Tailwind

colors: {
  custom: {
    50: '#839ee9',
    500: '#3378de',
    950: '#000000',
  },
}

SCSS

$custom: #3378de;
$custom-light: #839ee9;
$custom-dark: #000000;

JSON

{
  "hex": "#3378de",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 222
  },
  "hsl": {
    "h": 215.789,
    "s": 72.152,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58323,
    "c": 0.17054,
    "h": 258.4
  },
  "luminance": 0.19411
}

Semantic roles & 50–950 ramp

primary

#3378DE

secondary

#DBBD92

accent

#A539EF

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3378DE

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

Preview Lab → · Contrast checker → · Palette generator →