#3B53CB#3B53CB

#3B53CB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.7% C 0.187 H 269.6°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#3B53CB
RGB	rgb(59, 83, 203)
HSL	hsl(230, 58%, 51%)
HSV	hsv(230, 71%, 80%)
CMYK	cmyk(70.9%, 59.1%, 0%, 20.4%)
CIE-LAB	lab(40.29, 31.55, -64.95)
CIE-LCH	lch(40.29, 72.21, 295.91°)
OKLab	oklab(49.74% -0.0012 -0.1874)
OKLCH	oklch(49.74% 0.187 269.6)
XYZ	xyz(15.6727, 11.4265, 57.8679)
Luminance	0.1143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B53CB #CBB33B

analogous

#3B9BCB #3B53CB #6B3BCB

triadic

#3B53CB #CB3B53 #53CB3B

tetradic

#3B53CB #CB3B9B #CBB33B #3BCB6B

square

#3B53CB #CB3B9B #CBB33B #3BCB6B

split-complementary

#3B53CB #CB6B3B #9BCB3B

monochromatic

#1D2B6E #2A3E9F #3B53CB #6B7DD8 #9CA8E5

Accessibility & contrast

On white

6.39

#3B53CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3B53CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B53CB

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B53CB	#FFFFFF	#000000	##FFFFFF
##3B53CB	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CF

Deuteranopia (green-blind)

#0058C9

Tritanopia (blue-blind)

#007187

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3b53cb;
/* rgb */ color: rgb(59, 83, 203);
/* oklch */ color: oklch(49.7% 0.187 269.6);

Tailwind

colors: {
  custom: {
    50: '#8483dc',
    500: '#3b53cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b53cb;
$custom-light: #8483dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b53cb",
  "rgb": {
    "r": 59,
    "g": 83,
    "b": 203
  },
  "hsl": {
    "h": 230,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.49744,
    "c": 0.18737,
    "h": 269.6
  },
  "luminance": 0.11428
}

Semantic roles & 50–950 ramp

primary

#3B53CB

secondary

#D1C691

accent

#C747E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3B53CB

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

Preview Lab → · Contrast checker → · Palette generator →