#3B65CB#3B65CB

#3B65CB is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.3% C 0.165 H 264.6°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3B65CB
RGB	rgb(59, 101, 203)
HSL	hsl(223, 58%, 51%)
HSV	hsv(223, 71%, 80%)
CMYK	cmyk(70.9%, 50.2%, 0%, 20.4%)
CIE-LAB	lab(45.01, 20.03, -57.30)
CIE-LCH	lch(45.01, 60.70, 289.27°)
OKLab	oklab(53.3% -0.0156 -0.1646)
OKLCH	oklch(53.3% 0.165 264.6)
XYZ	xyz(17.2330, 14.5472, 58.3880)
Luminance	0.1455 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B65CB #CBA13B

analogous

#3BADCB #3B65CB #593BCB

triadic

#3B65CB #CB3B65 #65CB3B

tetradic

#3B65CB #CB3BAD #CBA13B #3BCB59

square

#3B65CB #CB3BAD #CBA13B #3BCB59

split-complementary

#3B65CB #CB593B #ADCB3B

monochromatic

#1D356E #2A4C9F #3B65CB #6B8BD8 #9CB1E5

Accessibility & contrast

On white

5.37

#3B65CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#3B65CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B65CB

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B65CB	#FFFFFF	#000000	##FFFFFF
##3B65CB	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2871CF

Deuteranopia (green-blind)

#0064C9

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3b65cb;
/* rgb */ color: rgb(59, 101, 203);
/* oklch */ color: oklch(53.3% 0.165 264.6);

Tailwind

colors: {
  custom: {
    50: '#8290db',
    500: '#3b65cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b65cb;
$custom-light: #8290db;
$custom-dark: #000000;

JSON

{
  "hex": "#3b65cb",
  "rgb": {
    "r": 59,
    "g": 101,
    "b": 203
  },
  "hsl": {
    "h": 222.5,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.53296,
    "c": 0.16535,
    "h": 264.6
  },
  "luminance": 0.14549
}

Semantic roles & 50–950 ramp

primary

#3B65CB

secondary

#D1BE91

accent

#B447E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3B65CB

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

Preview Lab → · Contrast checker → · Palette generator →