#3B78BB#3B78BB

#3B78BB is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.4% C 0.122 H 252.7°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3B78BB
RGB	rgb(59, 120, 187)
HSL	hsl(211, 52%, 48%)
HSV	hsv(211, 68%, 73%)
CMYK	cmyk(68.4%, 35.8%, 0%, 26.7%)
CIE-LAB	lab(49.43, 2.33, -41.02)
CIE-LCH	lch(49.43, 41.08, 273.25°)
OKLab	oklab(56.41% -0.0364 -0.1165)
OKLCH	oklch(56.41% 0.122 252.7)
XYZ	xyz(17.4864, 17.9488, 49.5470)
Luminance	0.1795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B78BB #BB7E3B

analogous

#3BB8BB #3B78BB #3E3BBB

triadic

#3B78BB #BB3B78 #78BB3B

tetradic

#3B78BB #BB3BB8 #BB7E3B #3BBB3E

square

#3B78BB #BB3BB8 #BB7E3B #3BBB3E

split-complementary

#3B78BB #BB3E3B #B8BB3B

monochromatic

#1E3C5E #2C5A8C #3B78BB #6597CE #93B6DD

Accessibility & contrast

On white

4.57

#3B78BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#3B78BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B78BB

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B78BB	#FFFFFF	#000000	##000000
##3B78BB	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7CBE

Deuteranopia (green-blind)

#4870BA

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3b78bb;
/* rgb */ color: rgb(59, 120, 187);
/* oklch */ color: oklch(56.4% 0.122 252.7);

Tailwind

colors: {
  custom: {
    50: '#7f9ed0',
    500: '#3b78bb',
    950: '#000000',
  },
}

SCSS

$custom: #3b78bb;
$custom-light: #7f9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b78bb",
  "rgb": {
    "r": 59,
    "g": 120,
    "b": 187
  },
  "hsl": {
    "h": 211.406,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.5641,
    "c": 0.12204,
    "h": 252.7
  },
  "luminance": 0.17951
}

Semantic roles & 50–950 ramp

primary

#3B78BB

secondary

#C8AA8A

accent

#974CDB

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3B78BB

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

Preview Lab → · Contrast checker → · Palette generator →