#3A78D2#3A78D2

#3A78D2 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 57.8% C 0.153 H 258.0°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3A78D2
RGB	rgb(58, 120, 210)
HSL	hsl(216, 63%, 53%)
HSV	hsv(216, 72%, 82%)
CMYK	cmyk(72.4%, 42.9%, 0%, 17.6%)
CIE-LAB	lab(50.67, 10.48, -52.21)
CIE-LCH	lch(50.67, 53.25, 281.35°)
OKLab	oklab(57.77% -0.0318 -0.1493)
OKLCH	oklch(57.77% 0.153 258)
XYZ	xyz(20.0900, 18.9834, 63.5656)
Luminance	0.1899 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78D2 #D2943A

analogous

#3AC4D2 #3A78D2 #483AD2

triadic

#3A78D2 #D23A78 #78D23A

tetradic

#3A78D2 #D23AC4 #D2943A #3AD248

square

#3A78D2 #D23AC4 #D2943A #3AD248

split-complementary

#3A78D2 #D2483A #C4D23A

monochromatic

#1B4077 #265BA8 #3A78D2 #6C9ADD #9EBCE9

Accessibility & contrast

On white

4.38

#3A78D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#3A78D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A78D2

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78D2	#FFFFFF	#000000	##000000
##3A78D2	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C80D5

Deuteranopia (green-blind)

#3172D0

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3a78d2;
/* rgb */ color: rgb(58, 120, 210);
/* oklch */ color: oklch(57.8% 0.153 258.0);

Tailwind

colors: {
  custom: {
    50: '#839ee0',
    500: '#3a78d2',
    950: '#000000',
  },
}

SCSS

$custom: #3a78d2;
$custom-light: #839ee0;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78d2",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 210
  },
  "hsl": {
    "h": 215.526,
    "s": 62.81,
    "l": 52.549
  },
  "oklch": {
    "l": 0.57773,
    "c": 0.15267,
    "h": 258
  },
  "luminance": 0.18986
}

Semantic roles & 50–950 ramp

primary

#3A78D2

secondary

#D5BA93

accent

#A342E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A78D2

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

Preview Lab → · Contrast checker → · Palette generator →