#3451BB#3451BB

#3451BB is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.7% C 0.170 H 267.8°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#3451BB
RGB	rgb(52, 81, 187)
HSL	hsl(227, 56%, 47%)
HSV	hsv(227, 72%, 73%)
CMYK	cmyk(72.2%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(38.20, 26.12, -59.05)
CIE-LCH	lch(38.20, 64.57, 293.86°)
OKLab	oklab(47.71% -0.0066 -0.1702)
OKLCH	oklch(47.71% 0.17 267.8)
XYZ	xyz(13.3251, 10.2014, 48.2709)
Luminance	0.1020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3451BB #BB9E34

analogous

#3495BB #3451BB #5B34BB

triadic

#3451BB #BB3451 #51BB34

tetradic

#3451BB #BB3495 #BB9E34 #34BB5B

square

#3451BB #BB3495 #BB9E34 #34BB5B

split-complementary

#3451BB #BB5B34 #95BB34

monochromatic

#19285B #273C8B #3451BB #5B74D1 #8B9DDF

Accessibility & contrast

On white

6.91

#3451BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#3451BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3451BB

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3451BB	#FFFFFF	#000000	##FFFFFF
##3451BB	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	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: #3451bb;
/* rgb */ color: rgb(52, 81, 187);
/* oklch */ color: oklch(47.7% 0.170 267.8);

Tailwind

colors: {
  custom: {
    50: '#7d81d0',
    500: '#3451bb',
    950: '#000000',
  },
}

SCSS

$custom: #3451bb;
$custom-light: #7d81d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3451bb",
  "rgb": {
    "r": 52,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 227.111,
    "s": 56.485,
    "l": 46.863
  },
  "oklch": {
    "l": 0.47705,
    "c": 0.17033,
    "h": 267.8
  },
  "luminance": 0.10203
}

Semantic roles & 50–950 ramp

primary

#3451BB

secondary

#C9BA82

accent

#BF48E0

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3451BB

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

Preview Lab → · Contrast checker → · Palette generator →