#3678DB#3678DB

#3678DB is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.2% C 0.166 H 258.6°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3678DB
RGB	rgb(54, 120, 219)
HSL	hsl(216, 70%, 54%)
HSV	hsv(216, 75%, 86%)
CMYK	cmyk(75.3%, 45.2%, 0%, 14.1%)
CIE-LAB	lab(51.07, 13.27, -56.67)
CIE-LCH	lch(51.07, 58.20, 283.18°)
OKLab	oklab(58.22% -0.0328 -0.1625)
OKLCH	oklch(58.22% 0.166 258.6)
XYZ	xyz(21.0193, 19.3293, 69.6272)
Luminance	0.1933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3678DB #DB9936

analogous

#36CADB #3678DB #4636DB

triadic

#3678DB #DB3678 #78DB36

tetradic

#3678DB #DB36CA #DB9936 #36DB46

square

#3678DB #DB36CA #DB9936 #36DB46

split-complementary

#3678DB #DB4636 #CADB36

monochromatic

#174180 #205BB4 #3678DB #6A9BE4 #9EBEEE

Accessibility & contrast

On white

4.32

#3678DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#3678DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3678DB

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3678DB	#FFFFFF	#000000	##000000
##3678DB	1.00	4.32	4.87	4.87
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4482DF

Deuteranopia (green-blind)

#1F73D9

Tritanopia (blue-blind)

#008F9F

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3678db;
/* rgb */ color: rgb(54, 120, 219);
/* oklch */ color: oklch(58.2% 0.166 258.6);

Tailwind

colors: {
  custom: {
    50: '#839ee7',
    500: '#3678db',
    950: '#000000',
  },
}

SCSS

$custom: #3678db;
$custom-light: #839ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#3678db",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 219
  },
  "hsl": {
    "h": 216,
    "s": 69.62,
    "l": 53.529
  },
  "oklch": {
    "l": 0.5822,
    "c": 0.16577,
    "h": 258.6
  },
  "luminance": 0.19332
}

Semantic roles & 50–950 ramp

primary

#3678DB

secondary

#DABD93

accent

#A63BEC

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3678DB

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

Preview Lab → · Contrast checker → · Palette generator →