#3A75CB#3A75CB

#3A75CB is a mid, vivid blue. Relative luminance 0.179; OKLCH L 56.7% C 0.147 H 258.0°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3A75CB
RGB	rgb(58, 117, 203)
HSL	hsl(216, 58%, 51%)
HSV	hsv(216, 71%, 80%)
CMYK	cmyk(71.4%, 42.4%, 0%, 20.4%)
CIE-LAB	lab(49.41, 9.79, -50.23)
CIE-LCH	lch(49.41, 51.17, 281.03°)
OKLab	oklab(56.67% -0.0305 -0.1435)
OKLCH	oklch(56.67% 0.147 258)
XYZ	xyz(18.8818, 17.9319, 58.9544)
Luminance	0.1793 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A75CB #CB903A

analogous

#3ABDCB #3A75CB #473ACB

triadic

#3A75CB #CB3A75 #75CB3A

tetradic

#3A75CB #CB3ABD #CB903A #3ACB47

square

#3A75CB #CB3ABD #CB903A #3ACB47

split-complementary

#3A75CB #CB473A #BDCB3A

monochromatic

#1D3E6E #2A599E #3A75CB #6A97D8 #9BB9E5

Accessibility & contrast

On white

4.58

#3A75CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#3A75CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A75CB

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A75CB	#FFFFFF	#000000	##000000
##3A75CB	1.00	4.58	4.59	4.59
#FFFFFF	4.58	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)

#757575

Design tokens & code

CSS

--color: #3a75cb;
/* rgb */ color: rgb(58, 117, 203);
/* oklch */ color: oklch(56.7% 0.147 258.0);

Tailwind

colors: {
  custom: {
    50: '#829cdb',
    500: '#3a75cb',
    950: '#000000',
  },
}

SCSS

$custom: #3a75cb;
$custom-light: #829cdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3a75cb",
  "rgb": {
    "r": 58,
    "g": 117,
    "b": 203
  },
  "hsl": {
    "h": 215.586,
    "s": 58.233,
    "l": 51.176
  },
  "oklch": {
    "l": 0.5667,
    "c": 0.14676,
    "h": 258
  },
  "luminance": 0.17934
}

Semantic roles & 50–950 ramp

primary

#3A75CB

secondary

#D0B690

accent

#A246E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A75CB

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

Preview Lab → · Contrast checker → · Palette generator →