#4B61BB#4B61BB

#4B61BB is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.2% C 0.143 H 270.4°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#4B61BB
RGB	rgb(75, 97, 187)
HSL	hsl(228, 45%, 51%)
HSV	hsv(228, 60%, 73%)
CMYK	cmyk(59.9%, 48.1%, 0%, 26.7%)
CIE-LAB	lab(43.70, 19.57, -50.11)
CIE-LCH	lch(43.70, 53.79, 291.33°)
OKLab	oklab(52.19% 0.0011 -0.1432)
OKLCH	oklch(52.19% 0.143 270.4)
XYZ	xyz(16.1430, 13.6318, 48.7846)
Luminance	0.1363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B61BB #BBA54B

analogous

#4B99BB #4B61BB #6D4BBB

triadic

#4B61BB #BB4B61 #61BB4B

tetradic

#4B61BB #BB4B99 #BBA54B #4BBB6D

square

#4B61BB #BB4B99 #BBA54B #4BBB6D

split-complementary

#4B61BB #BB6D4B #99BB4B

monochromatic

#263365 #374992 #4B61BB #7788CC #A4AFDD

Accessibility & contrast

On white

5.64

#4B61BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#4B61BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B61BB

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B61BB	#FFFFFF	#000000	##FFFFFF
##4B61BB	1.00	5.64	3.73	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#346CBE

Deuteranopia (green-blind)

#2163B9

Tritanopia (blue-blind)

#007585

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4b61bb;
/* rgb */ color: rgb(75, 97, 187);
/* oklch */ color: oklch(52.2% 0.143 270.4);

Tailwind

colors: {
  custom: {
    50: '#878dd0',
    500: '#4b61bb',
    950: '#000000',
  },
}

SCSS

$custom: #4b61bb;
$custom-light: #878dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#4b61bb",
  "rgb": {
    "r": 75,
    "g": 97,
    "b": 187
  },
  "hsl": {
    "h": 228.214,
    "s": 45.161,
    "l": 51.373
  },
  "oklch": {
    "l": 0.52189,
    "c": 0.14318,
    "h": 270.4
  },
  "luminance": 0.13633
}

Semantic roles & 50–950 ramp

primary

#4B61BB

secondary

#CAC098

accent

#BB53D5

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4B61BB

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

Preview Lab → · Contrast checker → · Palette generator →