#3A78D0#3A78D0

#3A78D0 is a mid, vivid blue. Relative luminance 0.189; OKLCH L 57.6% C 0.150 H 257.6°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3A78D0
RGB	rgb(58, 120, 208)
HSL	hsl(215, 61%, 52%)
HSV	hsv(215, 72%, 82%)
CMYK	cmyk(72.1%, 42.3%, 0%, 18.4%)
CIE-LAB	lab(50.55, 9.75, -51.26)
CIE-LCH	lch(50.55, 52.18, 280.77°)
OKLab	oklab(57.65% -0.0322 -0.1465)
OKLCH	oklch(57.65% 0.15 257.6)
XYZ	xyz(19.8424, 18.8844, 62.2616)
Luminance	0.1889 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78D0 #D0923A

analogous

#3AC3D0 #3A78D0 #473AD0

triadic

#3A78D0 #D03A78 #78D03A

tetradic

#3A78D0 #D03AC3 #D0923A #3AD047

square

#3A78D0 #D03AC3 #D0923A #3AD047

split-complementary

#3A78D0 #D0473A #C3D03A

monochromatic

#1C4074 #275BA5 #3A78D0 #6B9ADC #9DBCE8

Accessibility & contrast

On white

4.40

#3A78D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#3A78D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A78D0

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78D0	#FFFFFF	#000000	##000000
##3A78D0	1.00	4.40	4.78	4.78
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D80D3

Deuteranopia (green-blind)

#3372CE

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3a78d0;
/* rgb */ color: rgb(58, 120, 208);
/* oklch */ color: oklch(57.6% 0.150 257.6);

Tailwind

colors: {
  custom: {
    50: '#829edf',
    500: '#3a78d0',
    950: '#000000',
  },
}

SCSS

$custom: #3a78d0;
$custom-light: #829edf;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78d0",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 208
  },
  "hsl": {
    "h": 215.2,
    "s": 61.475,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57646,
    "c": 0.15003,
    "h": 257.6
  },
  "luminance": 0.18887
}

Semantic roles & 50–950 ramp

primary

#3A78D0

secondary

#D4B992

accent

#A243E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A78D0

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

Preview Lab → · Contrast checker → · Palette generator →