#3783AA#3783AA

#3783AA is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.0% C 0.095 H 234.2°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3783AA
RGB	rgb(55, 131, 170)
HSL	hsl(200, 51%, 44%)
HSV	hsv(200, 68%, 67%)
CMYK	cmyk(67.6%, 22.9%, 0%, 33.3%)
CIE-LAB	lab(51.78, -10.73, -27.55)
CIE-LCH	lch(51.78, 29.56, 248.72°)
OKLab	oklab(57.96% -0.0557 -0.0773)
OKLCH	oklch(57.96% 0.095 234.2)
XYZ	xyz(16.9447, 19.9453, 40.9792)
Luminance	0.1995 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783AA #AA5E37

analogous

#37AA98 #3783AA #374AAA

triadic

#3783AA #AA3783 #83AA37

tetradic

#3783AA #9837AA #AA5E37 #4AAA37

square

#3783AA #9837AA #AA5E37 #4AAA37

split-complementary

#3783AA #AA374A #AA9837

monochromatic

#193C4E #285F7C #3783AA #56A2C8 #84BBD7

Accessibility & contrast

On white

4.21

#3783AA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#3783AA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783AA

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783AA	#FFFFFF	#000000	##000000
##3783AA	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7082AC

Deuteranopia (green-blind)

#6076A9

Tritanopia (blue-blind)

#008D90

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3783aa;
/* rgb */ color: rgb(55, 131, 170);
/* oklch */ color: oklch(58.0% 0.095 234.2);

Tailwind

colors: {
  custom: {
    50: '#7ba7c3',
    500: '#3783aa',
    950: '#000000',
  },
}

SCSS

$custom: #3783aa;
$custom-light: #7ba7c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3783aa",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 170
  },
  "hsl": {
    "h": 200.348,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.57955,
    "c": 0.09529,
    "h": 234.2
  },
  "luminance": 0.19947
}

Semantic roles & 50–950 ramp

primary

#3783AA

secondary

#C1937C

accent

#7D4DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #3783AA

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

Preview Lab → · Contrast checker → · Palette generator →