#4B5FBB#4B5FBB

#4B5FBB is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.8% C 0.146 H 271.3°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#4B5FBB
RGB	rgb(75, 95, 187)
HSL	hsl(229, 45%, 51%)
HSV	hsv(229, 60%, 73%)
CMYK	cmyk(59.9%, 49.2%, 0%, 26.7%)
CIE-LAB	lab(43.16, 20.84, -50.97)
CIE-LCH	lch(43.16, 55.07, 292.24°)
OKLab	oklab(51.78% 0.0032 -0.1457)
OKLCH	oklch(51.78% 0.146 271.3)
XYZ	xyz(15.9605, 13.2669, 48.7238)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B5FBB #BBA74B

analogous

#4B97BB #4B5FBB #6F4BBB

triadic

#4B5FBB #BB4B5F #5FBB4B

tetradic

#4B5FBB #BB4B97 #BBA74B #4BBB6F

square

#4B5FBB #BB4B97 #BBA74B #4BBB6F

split-complementary

#4B5FBB #BB6F4B #97BB4B

monochromatic

#263265 #374792 #4B5FBB #7786CC #A4AEDD

Accessibility & contrast

On white

5.75

#4B5FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#4B5FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B5FBB

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B5FBB	#FFFFFF	#000000	##FFFFFF
##4B5FBB	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306BBE

Deuteranopia (green-blind)

#1B61B9

Tritanopia (blue-blind)

#007484

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #4b5fbb;
/* rgb */ color: rgb(75, 95, 187);
/* oklch */ color: oklch(51.8% 0.146 271.3);

Tailwind

colors: {
  custom: {
    50: '#878cd0',
    500: '#4b5fbb',
    950: '#000000',
  },
}

SCSS

$custom: #4b5fbb;
$custom-light: #878cd0;
$custom-dark: #000000;

JSON

{
  "hex": "#4b5fbb",
  "rgb": {
    "r": 75,
    "g": 95,
    "b": 187
  },
  "hsl": {
    "h": 229.286,
    "s": 45.161,
    "l": 51.373
  },
  "oklch": {
    "l": 0.51781,
    "c": 0.14578,
    "h": 271.3
  },
  "luminance": 0.13268
}

Semantic roles & 50–950 ramp

primary

#4B5FBB

secondary

#CAC198

accent

#BE53D5

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4B5FBB

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

Preview Lab → · Contrast checker → · Palette generator →