#3A78B5#3A78B5

#3A78B5 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 56.0% C 0.115 H 250.3°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3A78B5
RGB	rgb(58, 120, 181)
HSL	hsl(210, 51%, 47%)
HSV	hsv(210, 68%, 71%)
CMYK	cmyk(68%, 33.7%, 0%, 29%)
CIE-LAB	lab(49.09, 0.04, -38.10)
CIE-LCH	lch(49.09, 38.10, 270.06°)
OKLab	oklab(56.03% -0.0387 -0.108)
OKLCH	oklch(56.03% 0.115 250.3)
XYZ	xyz(16.7988, 17.6669, 46.2318)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78B5 #B5773A

analogous

#3AB5B5 #3A78B5 #3A3BB5

triadic

#3A78B5 #B53A78 #78B53A

tetradic

#3A78B5 #B53AB5 #B5773A #3BB53A

square

#3A78B5 #B53AB5 #B5773A #3BB53A

split-complementary

#3A78B5 #B53A3B #B5B53A

monochromatic

#1C3B58 #2B5987 #3A78B5 #6097CC #8EB5DB

Accessibility & contrast

On white

4.63

#3A78B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3A78B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3A78B5

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78B5	#FFFFFF	#000000	##FFFFFF
##3A78B5	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7BB8

Deuteranopia (green-blind)

#4C6FB4

Tritanopia (blue-blind)

#00868E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3a78b5;
/* rgb */ color: rgb(58, 120, 181);
/* oklch */ color: oklch(56.0% 0.115 250.3);

Tailwind

colors: {
  custom: {
    50: '#7e9ecb',
    500: '#3a78b5',
    950: '#000000',
  },
}

SCSS

$custom: #3a78b5;
$custom-light: #7e9ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78b5",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 181
  },
  "hsl": {
    "h": 209.756,
    "s": 51.464,
    "l": 46.863
  },
  "oklch": {
    "l": 0.5603,
    "c": 0.11471,
    "h": 250.3
  },
  "luminance": 0.17669
}

Semantic roles & 50–950 ramp

primary

#3A78B5

secondary

#C6A585

accent

#934DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3A78B5

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

Preview Lab → · Contrast checker → · Palette generator →