#3B66AF#3B66AF

#3B66AF is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.6% C 0.125 H 260.3°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#3B66AF
RGB	rgb(59, 102, 175)
HSL	hsl(218, 50%, 46%)
HSV	hsv(218, 66%, 69%)
CMYK	cmyk(66.3%, 41.7%, 0%, 31.4%)
CIE-LAB	lab(43.55, 9.21, -43.39)
CIE-LCH	lch(43.55, 44.36, 281.98°)
OKLab	oklab(51.61% -0.0211 -0.1237)
OKLCH	oklch(51.61% 0.125 260.3)
XYZ	xyz(14.2901, 13.5263, 42.4069)
Luminance	0.1353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B66AF #AF843B

analogous

#3BA0AF #3B66AF #4A3BAF

triadic

#3B66AF #AF3B66 #66AF3B

tetradic

#3B66AF #AF3BA0 #AF843B #3BAF4A

square

#3B66AF #AF3BA0 #AF843B #3BAF4A

split-complementary

#3B66AF #AF4A3B #A0AF3B

monochromatic

#1C3153 #2C4B81 #3B66AF #5E86C9 #8CA8D8

Accessibility & contrast

On white

5.67

#3B66AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3B66AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B66AF

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B66AF	#FFFFFF	#000000	##FFFFFF
##3B66AF	1.00	5.67	3.71	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456DB2

Deuteranopia (green-blind)

#3362AD

Tritanopia (blue-blind)

#007782

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3b66af;
/* rgb */ color: rgb(59, 102, 175);
/* oklch */ color: oklch(51.6% 0.125 260.3);

Tailwind

colors: {
  custom: {
    50: '#7d91c7',
    500: '#3b66af',
    950: '#000000',
  },
}

SCSS

$custom: #3b66af;
$custom-light: #7d91c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3b66af",
  "rgb": {
    "r": 59,
    "g": 102,
    "b": 175
  },
  "hsl": {
    "h": 217.759,
    "s": 49.573,
    "l": 45.882
  },
  "oklch": {
    "l": 0.51614,
    "c": 0.12548,
    "h": 260.3
  },
  "luminance": 0.13528
}

Semantic roles & 50–950 ramp

primary

#3B66AF

secondary

#C3AB83

accent

#A64FD9

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3B66AF

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

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