#3B50CB#3B50CB

#3B50CB is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.2% C 0.191 H 270.3°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#3B50CB
RGB	rgb(59, 80, 203)
HSL	hsl(231, 58%, 51%)
HSV	hsv(231, 71%, 80%)
CMYK	cmyk(70.9%, 60.6%, 0%, 20.4%)
CIE-LAB	lab(39.54, 33.46, -66.17)
CIE-LCH	lch(39.54, 74.15, 296.82°)
OKLab	oklab(49.19% 0.001 -0.191)
OKLCH	oklch(49.19% 0.191 270.3)
XYZ	xyz(15.4481, 10.9774, 57.7930)
Luminance	0.1098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B50CB #CBB63B

analogous

#3B98CB #3B50CB #6E3BCB

triadic

#3B50CB #CB3B50 #50CB3B

tetradic

#3B50CB #CB3B98 #CBB63B #3BCB6E

square

#3B50CB #CB3B98 #CBB63B #3BCB6E

split-complementary

#3B50CB #CB6E3B #98CB3B

monochromatic

#1D296E #2A3B9F #3B50CB #6B7BD8 #9CA6E5

Accessibility & contrast

On white

6.57

#3B50CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#3B50CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B50CB

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B50CB	#FFFFFF	#000000	##FFFFFF
##3B50CB	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064CF

Deuteranopia (green-blind)

#0057C9

Tritanopia (blue-blind)

#006F86

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3b50cb;
/* rgb */ color: rgb(59, 80, 203);
/* oklch */ color: oklch(49.2% 0.191 270.3);

Tailwind

colors: {
  custom: {
    50: '#8481dc',
    500: '#3b50cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b50cb;
$custom-light: #8481dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b50cb",
  "rgb": {
    "r": 59,
    "g": 80,
    "b": 203
  },
  "hsl": {
    "h": 231.25,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.49189,
    "c": 0.19098,
    "h": 270.3
  },
  "luminance": 0.10979
}

Semantic roles & 50–950 ramp

primary

#3B50CB

secondary

#D1C791

accent

#CB47E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3B50CB

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

Preview Lab → · Contrast checker → · Palette generator →