#3A75DD#3A75DD

#3A75DD is a mid, vivid blue. Relative luminance 0.188; OKLCH L 57.9% C 0.171 H 260.8°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3A75DD
RGB	rgb(58, 117, 221)
HSL	hsl(218, 71%, 55%)
HSV	hsv(218, 74%, 87%)
CMYK	cmyk(73.8%, 47.1%, 0%, 13.3%)
CIE-LAB	lab(50.50, 16.37, -58.71)
CIE-LCH	lch(50.50, 60.95, 285.58°)
OKLab	oklab(57.86% -0.0273 -0.1685)
OKLCH	oklch(57.86% 0.171 260.8)
XYZ	xyz(21.1527, 18.8402, 70.9143)
Luminance	0.1884 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A75DD #DDA23A

analogous

#3AC7DD #3A75DD #503ADD

triadic

#3A75DD #DD3A75 #75DD3A

tetradic

#3A75DD #DD3AC7 #DDA23A #3ADD50

square

#3A75DD #DD3AC7 #DDA23A #3ADD50

split-complementary

#3A75DD #DD503A #C7DD3A

monochromatic

#173F86 #2058BA #3A75DD #6E9AE6 #A2BEEF

Accessibility & contrast

On white

4.40

#3A75DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#3A75DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A75DD

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A75DD	#FFFFFF	#000000	##000000
##3A75DD	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C80E1

Deuteranopia (green-blind)

#0C71DB

Tritanopia (blue-blind)

#008E9E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3a75dd;
/* rgb */ color: rgb(58, 117, 221);
/* oklch */ color: oklch(57.9% 0.171 260.8);

Tailwind

colors: {
  custom: {
    50: '#859ce8',
    500: '#3a75dd',
    950: '#000000',
  },
}

SCSS

$custom: #3a75dd;
$custom-light: #859ce8;
$custom-dark: #000000;

JSON

{
  "hex": "#3a75dd",
  "rgb": {
    "r": 58,
    "g": 117,
    "b": 221
  },
  "hsl": {
    "h": 218.282,
    "s": 70.563,
    "l": 54.706
  },
  "oklch": {
    "l": 0.57858,
    "c": 0.17069,
    "h": 260.8
  },
  "luminance": 0.18843
}

Semantic roles & 50–950 ramp

primary

#3A75DD

secondary

#DCC397

accent

#AD3AED

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3A75DD

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

Preview Lab → · Contrast checker → · Palette generator →