#3678DD#3678DD

#3678DD is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.4% C 0.168 H 258.9°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#3678DD
RGB	rgb(54, 120, 221)
HSL	hsl(216, 71%, 54%)
HSV	hsv(216, 76%, 87%)
CMYK	cmyk(75.6%, 45.7%, 0%, 13.3%)
CIE-LAB	lab(51.19, 14.01, -57.60)
CIE-LCH	lch(51.19, 59.28, 283.67°)
OKLab	oklab(58.35% -0.0325 -0.1652)
OKLCH	oklch(58.35% 0.168 258.9)
XYZ	xyz(21.2842, 19.4352, 71.0222)
Luminance	0.1944 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3678DD #DD9B36

analogous

#36CCDD #3678DD #4836DD

triadic

#3678DD #DD3678 #78DD36

tetradic

#3678DD #DD36CC #DD9B36 #36DD48

square

#3678DD #DD36CC #DD9B36 #36DD48

split-complementary

#3678DD #DD4836 #CCDD36

monochromatic

#164183 #1F5BB7 #3678DD #6A9BE6 #9FBEEF

Accessibility & contrast

On white

4.30

#3678DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#3678DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3678DD

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3678DD	#FFFFFF	#000000	##000000
##3678DD	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4282E1

Deuteranopia (green-blind)

#1A73DB

Tritanopia (blue-blind)

#0090A0

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3678dd;
/* rgb */ color: rgb(54, 120, 221);
/* oklch */ color: oklch(58.4% 0.168 258.9);

Tailwind

colors: {
  custom: {
    50: '#849ee8',
    500: '#3678dd',
    950: '#000000',
  },
}

SCSS

$custom: #3678dd;
$custom-light: #849ee8;
$custom-dark: #000000;

JSON

{
  "hex": "#3678dd",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 221
  },
  "hsl": {
    "h": 216.287,
    "s": 71.064,
    "l": 53.922
  },
  "oklch": {
    "l": 0.58353,
    "c": 0.16839,
    "h": 258.9
  },
  "luminance": 0.19438
}

Semantic roles & 50–950 ramp

primary

#3678DD

secondary

#DBBF94

accent

#A73AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3678DD

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

Preview Lab → · Contrast checker → · Palette generator →