#3351BB#3351BB

#3351BB is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.7% C 0.171 H 267.5°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#3351BB
RGB	rgb(51, 81, 187)
HSL	hsl(227, 57%, 47%)
HSV	hsv(227, 73%, 73%)
CMYK	cmyk(72.7%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(38.15, 25.99, -59.13)
CIE-LCH	lch(38.15, 64.59, 293.73°)
OKLab	oklab(47.66% -0.0075 -0.1704)
OKLCH	oklch(47.66% 0.171 267.5)
XYZ	xyz(13.2742, 10.1751, 48.2685)
Luminance	0.1018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3351BB #BB9D33

analogous

#3395BB #3351BB #5933BB

triadic

#3351BB #BB3351 #51BB33

tetradic

#3351BB #BB3395 #BB9D33 #33BB59

square

#3351BB #BB3395 #BB9D33 #33BB59

split-complementary

#3351BB #BB5933 #95BB33

monochromatic

#19275B #263C8B #3351BB #5974D2 #899CDF

Accessibility & contrast

On white

6.92

#3351BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#3351BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3351BB

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3351BB	#FFFFFF	#000000	##FFFFFF
##3351BB	1.00	6.92	3.04	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060BF

Deuteranopia (green-blind)

#0054B9

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3351bb;
/* rgb */ color: rgb(51, 81, 187);
/* oklch */ color: oklch(47.7% 0.171 267.5);

Tailwind

colors: {
  custom: {
    50: '#7d81d0',
    500: '#3351bb',
    950: '#000000',
  },
}

SCSS

$custom: #3351bb;
$custom-light: #7d81d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3351bb",
  "rgb": {
    "r": 51,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 226.765,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.47657,
    "c": 0.17062,
    "h": 267.5
  },
  "luminance": 0.10177
}

Semantic roles & 50–950 ramp

primary

#3351BB

secondary

#C9B981

accent

#BF47E0

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3351BB

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

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