#3C78CC#3C78CC

#3C78CC is a mid, vivid blue. Relative luminance 0.188; OKLCH L 57.5% C 0.144 H 257.3°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3C78CC
RGB	rgb(60, 120, 204)
HSL	hsl(215, 59%, 52%)
HSV	hsv(215, 71%, 80%)
CMYK	cmyk(70.6%, 41.2%, 0%, 20%)
CIE-LAB	lab(50.39, 8.59, -49.23)
CIE-LCH	lch(50.39, 49.97, 279.89°)
OKLab	oklab(57.47% -0.0316 -0.1405)
OKLCH	oklch(57.47% 0.144 257.3)
XYZ	xyz(19.4751, 18.7512, 59.7080)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C78CC #CC903C

analogous

#3CC0CC #3C78CC #483CCC

triadic

#3C78CC #CC3C78 #78CC3C

tetradic

#3C78CC #CC3CC0 #CC903C #3CCC48

square

#3C78CC #CC3CC0 #CC903C #3CCC48

split-complementary

#3C78CC #CC483C #C0CC3C

monochromatic

#1D4070 #2A5CA1 #3C78CC #6D9AD9 #9DBBE5

Accessibility & contrast

On white

4.42

#3C78CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#3C78CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3C78CC

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C78CC	#FFFFFF	#000000	##000000
##3C78CC	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#507FCF

Deuteranopia (green-blind)

#3972CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3c78cc;
/* rgb */ color: rgb(60, 120, 204);
/* oklch */ color: oklch(57.5% 0.144 257.3);

Tailwind

colors: {
  custom: {
    50: '#829edc',
    500: '#3c78cc',
    950: '#000000',
  },
}

SCSS

$custom: #3c78cc;
$custom-light: #829edc;
$custom-dark: #000000;

JSON

{
  "hex": "#3c78cc",
  "rgb": {
    "r": 60,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 215,
    "s": 58.537,
    "l": 51.765
  },
  "oklch": {
    "l": 0.5747,
    "c": 0.14406,
    "h": 257.3
  },
  "luminance": 0.18753
}

Semantic roles & 50–950 ramp

primary

#3C78CC

secondary

#D1B792

accent

#A146E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3C78CC

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

Preview Lab → · Contrast checker → · Palette generator →