#3D66BB#3D66BB

#3D66BB is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.5% C 0.141 H 263.0°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3D66BB
RGB	rgb(61, 102, 187)
HSL	hsl(220, 51%, 49%)
HSV	hsv(220, 67%, 73%)
CMYK	cmyk(67.4%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(44.35, 13.88, -49.11)
CIE-LCH	lch(44.35, 51.03, 285.78°)
OKLab	oklab(52.49% -0.0171 -0.1404)
OKLCH	oklch(52.49% 0.141 263)
XYZ	xyz(15.6423, 14.0812, 48.8977)
Luminance	0.1408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D66BB #BB923D

analogous

#3DA5BB #3D66BB #533DBB

triadic

#3D66BB #BB3D66 #66BB3D

tetradic

#3D66BB #BB3DA5 #BB923D #3DBB53

square

#3D66BB #BB3DA5 #BB923D #3DBB53

split-complementary

#3D66BB #BB533D #A5BB3D

monochromatic

#1F345F #2E4D8D #3D66BB #6889CE #96ADDD

Accessibility & contrast

On white

5.50

#3D66BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3D66BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3D66BB

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D66BB	#FFFFFF	#000000	##FFFFFF
##3D66BB	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6FBE

Deuteranopia (green-blind)

#2563B9

Tritanopia (blue-blind)

#007A87

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3d66bb;
/* rgb */ color: rgb(61, 102, 187);
/* oklch */ color: oklch(52.5% 0.141 263.0);

Tailwind

colors: {
  custom: {
    50: '#8091d0',
    500: '#3d66bb',
    950: '#000000',
  },
}

SCSS

$custom: #3d66bb;
$custom-light: #8091d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3d66bb",
  "rgb": {
    "r": 61,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 220.476,
    "s": 50.806,
    "l": 48.627
  },
  "oklch": {
    "l": 0.52489,
    "c": 0.14149,
    "h": 263
  },
  "luminance": 0.14083
}

Semantic roles & 50–950 ramp

primary

#3D66BB

secondary

#C8B48C

accent

#AC4EDA

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3D66BB

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

Preview Lab → · Contrast checker → · Palette generator →