#3D66BC#3D66BC

#3D66BC is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.6% C 0.143 H 263.2°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#3D66BC
RGB	rgb(61, 102, 188)
HSL	hsl(221, 51%, 49%)
HSV	hsv(221, 68%, 74%)
CMYK	cmyk(67.6%, 45.7%, 0%, 26.3%)
CIE-LAB	lab(44.41, 14.24, -49.59)
CIE-LCH	lch(44.41, 51.59, 286.02°)
OKLab	oklab(52.56% -0.017 -0.1419)
OKLCH	oklch(52.56% 0.143 263.2)
XYZ	xyz(15.7497, 14.1241, 49.4634)
Luminance	0.1413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D66BC #BC933D

analogous

#3DA6BC #3D66BC #543DBC

triadic

#3D66BC #BC3D66 #66BC3D

tetradic

#3D66BC #BC3DA6 #BC933D #3DBC54

square

#3D66BC #BC3DA6 #BC933D #3DBC54

split-complementary

#3D66BC #BC543D #A6BC3D

monochromatic

#1F3460 #2E4D8E #3D66BC #6889CE #96ADDD

Accessibility & contrast

On white

5.49

#3D66BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3D66BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3D66BC

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D66BC	#FFFFFF	#000000	##FFFFFF
##3D66BC	1.00	5.49	3.83	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6FBF

Deuteranopia (green-blind)

#2364BA

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3d66bc;
/* rgb */ color: rgb(61, 102, 188);
/* oklch */ color: oklch(52.6% 0.143 263.2);

Tailwind

colors: {
  custom: {
    50: '#8091d1',
    500: '#3d66bc',
    950: '#000000',
  },
}

SCSS

$custom: #3d66bc;
$custom-light: #8091d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3d66bc",
  "rgb": {
    "r": 61,
    "g": 102,
    "b": 188
  },
  "hsl": {
    "h": 220.63,
    "s": 51.004,
    "l": 48.824
  },
  "oklch": {
    "l": 0.52556,
    "c": 0.14288,
    "h": 263.2
  },
  "luminance": 0.14126
}

Semantic roles & 50–950 ramp

primary

#3D66BC

secondary

#C9B58C

accent

#AD4DDA

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3D66BC

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

Preview Lab → · Contrast checker → · Palette generator →