#3C66BB#3C66BB

#3C66BB is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.4% C 0.142 H 262.7°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3C66BB
RGB	rgb(60, 102, 187)
HSL	hsl(220, 51%, 48%)
HSV	hsv(220, 68%, 73%)
CMYK	cmyk(67.9%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(44.30, 13.72, -49.18)
CIE-LCH	lch(44.30, 51.06, 285.58°)
OKLab	oklab(52.44% -0.018 -0.1407)
OKLCH	oklch(52.44% 0.142 262.7)
XYZ	xyz(15.5813, 14.0497, 48.8948)
Luminance	0.1405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66BB #BB913C

analogous

#3CA5BB #3C66BB #513CBB

triadic

#3C66BB #BB3C66 #66BB3C

tetradic

#3C66BB #BB3CA5 #BB913C #3CBB51

square

#3C66BB #BB3CA5 #BB913C #3CBB51

split-complementary

#3C66BB #BB513C #A5BB3C

monochromatic

#1E335E #2D4D8D #3C66BB #6689CE #95ACDD

Accessibility & contrast

On white

5.51

#3C66BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3C66BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66BB

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66BB	#FFFFFF	#000000	##FFFFFF
##3C66BB	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6FBE

Deuteranopia (green-blind)

#2463B9

Tritanopia (blue-blind)

#007A87

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3c66bb;
/* rgb */ color: rgb(60, 102, 187);
/* oklch */ color: oklch(52.4% 0.142 262.7);

Tailwind

colors: {
  custom: {
    50: '#8091d0',
    500: '#3c66bb',
    950: '#000000',
  },
}

SCSS

$custom: #3c66bb;
$custom-light: #8091d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66bb",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 220.157,
    "s": 51.417,
    "l": 48.431
  },
  "oklch": {
    "l": 0.52442,
    "c": 0.14183,
    "h": 262.7
  },
  "luminance": 0.14051
}

Semantic roles & 50–950 ramp

primary

#3C66BB

secondary

#C8B48B

accent

#AC4DDB

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3C66BB

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

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