#3B54BB#3B54BB

#3B54BB is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.7% C 0.165 H 269.1°. Best body text is #FFFFFF at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#3B54BB
RGB	rgb(59, 84, 187)
HSL	hsl(228, 52%, 48%)
HSV	hsv(228, 68%, 73%)
CMYK	cmyk(68.4%, 55.1%, 0%, 26.7%)
CIE-LAB	lab(39.34, 25.16, -57.19)
CIE-LCH	lch(39.34, 62.48, 293.74°)
OKLab	oklab(48.65% -0.0025 -0.1645)
OKLCH	oklch(48.65% 0.165 269.1)
XYZ	xyz(13.9405, 10.8570, 48.3650)
Luminance	0.1086 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B54BB #BBA23B

analogous

#3B94BB #3B54BB #623BBB

triadic

#3B54BB #BB3B54 #54BB3B

tetradic

#3B54BB #BB3B94 #BBA23B #3BBB62

square

#3B54BB #BB3B94 #BBA23B #3BBB62

split-complementary

#3B54BB #BB623B #94BB3B

monochromatic

#1E2A5E #2C3F8C #3B54BB #6579CE #93A2DD

Accessibility & contrast

On white

6.62

#3B54BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3B54BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B54BB

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B54BB	#FFFFFF	#000000	##FFFFFF
##3B54BB	1.00	6.62	3.17	6.62
#FFFFFF	6.62	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#006D7F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3b54bb;
/* rgb */ color: rgb(59, 84, 187);
/* oklch */ color: oklch(48.7% 0.165 269.1);

Tailwind

colors: {
  custom: {
    50: '#8083d0',
    500: '#3b54bb',
    950: '#000000',
  },
}

SCSS

$custom: #3b54bb;
$custom-light: #8083d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b54bb",
  "rgb": {
    "r": 59,
    "g": 84,
    "b": 187
  },
  "hsl": {
    "h": 228.281,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.48653,
    "c": 0.16456,
    "h": 269.1
  },
  "luminance": 0.10858
}

Semantic roles & 50–950 ramp

primary

#3B54BB

secondary

#C8BC8A

accent

#C04CDB

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3B54BB

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

Preview Lab → · Contrast checker → · Palette generator →