#3378AB#3378AB

#3378AB is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.2% C 0.105 H 243.9°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3378AB
RGB	rgb(51, 120, 171)
HSL	hsl(206, 54%, 44%)
HSV	hsv(206, 70%, 67%)
CMYK	cmyk(70.2%, 29.8%, 0%, 32.9%)
CIE-LAB	lab(48.35, -4.63, -33.47)
CIE-LCH	lch(48.35, 33.79, 262.12°)
OKLab	oklab(55.22% -0.0464 -0.0946)
OKLCH	oklch(55.22% 0.105 243.9)
XYZ	xyz(15.4296, 17.0753, 41.0029)
Luminance	0.1708 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378AB #AB6633

analogous

#33ABA2 #3378AB #333CAB

triadic

#3378AB #AB3378 #78AB33

tetradic

#3378AB #A233AB #AB6633 #3CAB33

square

#3378AB #A233AB #AB6633 #3CAB33

split-complementary

#3378AB #AB333C #ABA233

monochromatic

#17364D #25577C #3378AB #5097CB #7FB3D9

Accessibility & contrast

On white

4.76

#3378AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3378AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3378AB

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378AB	#FFFFFF	#000000	##FFFFFF
##3378AB	1.00	4.76	4.42	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6179AD

Deuteranopia (green-blind)

#506EAA

Tritanopia (blue-blind)

#00848A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3378ab;
/* rgb */ color: rgb(51, 120, 171);
/* oklch */ color: oklch(55.2% 0.105 243.9);

Tailwind

colors: {
  custom: {
    50: '#799ec4',
    500: '#3378ab',
    950: '#000000',
  },
}

SCSS

$custom: #3378ab;
$custom-light: #799ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#3378ab",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 171
  },
  "hsl": {
    "h": 205.5,
    "s": 54.054,
    "l": 43.529
  },
  "oklch": {
    "l": 0.55222,
    "c": 0.10535,
    "h": 243.9
  },
  "luminance": 0.17077
}

Semantic roles & 50–950 ramp

primary

#3378AB

secondary

#C29778

accent

#894ADD

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3378AB

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

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