#3B78BC#3B78BC

#3B78BC is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.5% C 0.123 H 253.0°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3B78BC
RGB	rgb(59, 120, 188)
HSL	hsl(212, 52%, 48%)
HSV	hsv(212, 69%, 74%)
CMYK	cmyk(68.6%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(49.49, 2.69, -41.51)
CIE-LCH	lch(49.49, 41.60, 273.71°)
OKLab	oklab(56.47% -0.0361 -0.1179)
OKLCH	oklch(56.47% 0.123 253)
XYZ	xyz(17.5939, 17.9918, 50.1127)
Luminance	0.1799 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B78BC #BC7F3B

analogous

#3BB8BC #3B78BC #3E3BBC

triadic

#3B78BC #BC3B78 #78BC3B

tetradic

#3B78BC #BC3BB8 #BC7F3B #3BBC3E

square

#3B78BC #BC3BB8 #BC7F3B #3BBC3E

split-complementary

#3B78BC #BC3E3B #B8BC3B

monochromatic

#1E3D5F #2C5A8D #3B78BC #6597CF #94B7DD

Accessibility & contrast

On white

4.57

#3B78BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#3B78BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B78BC

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B78BC	#FFFFFF	#000000	##000000
##3B78BC	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7CBF

Deuteranopia (green-blind)

#4770BB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3b78bc;
/* rgb */ color: rgb(59, 120, 188);
/* oklch */ color: oklch(56.5% 0.123 253.0);

Tailwind

colors: {
  custom: {
    50: '#7f9ed0',
    500: '#3b78bc',
    950: '#000000',
  },
}

SCSS

$custom: #3b78bc;
$custom-light: #7f9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b78bc",
  "rgb": {
    "r": 59,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 211.628,
    "s": 52.227,
    "l": 48.431
  },
  "oklch": {
    "l": 0.56468,
    "c": 0.12334,
    "h": 253
  },
  "luminance": 0.17994
}

Semantic roles & 50–950 ramp

primary

#3B78BC

secondary

#C9AB8A

accent

#984CDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3B78BC

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

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