#3A78CC#3A78CC

#3A78CC is a mid, vivid cyan. Relative luminance 0.187; OKLCH L 57.4% C 0.145 H 256.8°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3A78CC
RGB	rgb(58, 120, 204)
HSL	hsl(215, 59%, 51%)
HSV	hsv(215, 72%, 80%)
CMYK	cmyk(71.6%, 41.2%, 0%, 20%)
CIE-LAB	lab(50.32, 8.30, -49.35)
CIE-LCH	lch(50.32, 50.04, 279.55°)
OKLab	oklab(57.39% -0.033 -0.1409)
OKLCH	oklch(57.39% 0.145 256.8)
XYZ	xyz(19.3565, 18.6900, 59.7024)
Luminance	0.1869 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78CC #CC8E3A

analogous

#3AC1CC #3A78CC #453ACC

triadic

#3A78CC #CC3A78 #78CC3A

tetradic

#3A78CC #CC3AC1 #CC8E3A #3ACC45

square

#3A78CC #CC3AC1 #CC8E3A #3ACC45

split-complementary

#3A78CC #CC453A #C1CC3A

monochromatic

#1D406F #295BA0 #3A78CC #6B99D9 #9BBBE5

Accessibility & contrast

On white

4.43

#3A78CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#3A78CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A78CC

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78CC	#FFFFFF	#000000	##000000
##3A78CC	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#507FCF

Deuteranopia (green-blind)

#3872CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3a78cc;
/* rgb */ color: rgb(58, 120, 204);
/* oklch */ color: oklch(57.4% 0.145 256.8);

Tailwind

colors: {
  custom: {
    50: '#829edc',
    500: '#3a78cc',
    950: '#000000',
  },
}

SCSS

$custom: #3a78cc;
$custom-light: #829edc;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78cc",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 214.521,
    "s": 58.871,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57394,
    "c": 0.14474,
    "h": 256.8
  },
  "luminance": 0.18692
}

Semantic roles & 50–950 ramp

primary

#3A78CC

secondary

#D1B691

accent

#A046E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A78CC

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

Preview Lab → · Contrast checker → · Palette generator →