#3B75CB#3B75CB

#3B75CB is a mid, vivid blue. Relative luminance 0.180; OKLCH L 56.7% C 0.146 H 258.3°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3B75CB
RGB	rgb(59, 117, 203)
HSL	hsl(216, 58%, 51%)
HSV	hsv(216, 71%, 80%)
CMYK	cmyk(70.9%, 42.4%, 0%, 20.4%)
CIE-LAB	lab(49.45, 9.94, -50.17)
CIE-LCH	lch(49.45, 51.14, 281.20°)
OKLab	oklab(56.71% -0.0298 -0.1434)
OKLCH	oklch(56.71% 0.146 258.3)
XYZ	xyz(18.9405, 17.9622, 58.9572)
Luminance	0.1796 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B75CB #CB913B

analogous

#3BBDCB #3B75CB #493BCB

triadic

#3B75CB #CB3B75 #75CB3B

tetradic

#3B75CB #CB3BBD #CB913B #3BCB49

square

#3B75CB #CB3BBD #CB913B #3BCB49

split-complementary

#3B75CB #CB493B #BDCB3B

monochromatic

#1D3E6E #2A599F #3B75CB #6B97D8 #9CB9E5

Accessibility & contrast

On white

4.57

#3B75CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#3B75CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B75CB

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B75CB	#FFFFFF	#000000	##000000
##3B75CB	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C7DCE

Deuteranopia (green-blind)

#336FC9

Tritanopia (blue-blind)

#008996

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3b75cb;
/* rgb */ color: rgb(59, 117, 203);
/* oklch */ color: oklch(56.7% 0.146 258.3);

Tailwind

colors: {
  custom: {
    50: '#829cdb',
    500: '#3b75cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b75cb;
$custom-light: #829cdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3b75cb",
  "rgb": {
    "r": 59,
    "g": 117,
    "b": 203
  },
  "hsl": {
    "h": 215.833,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56709,
    "c": 0.14642,
    "h": 258.3
  },
  "luminance": 0.17964
}

Semantic roles & 50–950 ramp

primary

#3B75CB

secondary

#D1B791

accent

#A347E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3B75CB

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

Preview Lab → · Contrast checker → · Palette generator →