#305DB3#305DB3

#305DB3 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.4% C 0.146 H 261.8°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#305DB3
RGB	rgb(48, 93, 179)
HSL	hsl(219, 58%, 45%)
HSV	hsv(219, 73%, 70%)
CMYK	cmyk(73.2%, 48%, 0%, 29.8%)
CIE-LAB	lab(40.75, 14.75, -50.24)
CIE-LCH	lch(40.75, 52.36, 286.36°)
OKLab	oklab(49.41% -0.0207 -0.1441)
OKLCH	oklch(49.41% 0.146 261.8)
XYZ	xyz(13.2670, 11.7103, 44.2002)
Luminance	0.1171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305DB3 #B38630

analogous

#309FB3 #305DB3 #4430B3

triadic

#305DB3 #B3305D #5DB330

tetradic

#305DB3 #B3309F #B38630 #30B344

square

#305DB3 #B3309F #B38630 #30B344

split-complementary

#305DB3 #B34430 #9FB330

monochromatic

#162B52 #234483 #305DB3 #507CD0 #80A0DD

Accessibility & contrast

On white

6.28

#305DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#305DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305DB3

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305DB3	#FFFFFF	#000000	##FFFFFF
##305DB3	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E66B6

Deuteranopia (green-blind)

#085AB1

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #305db3;
/* rgb */ color: rgb(48, 93, 179);
/* oklch */ color: oklch(49.4% 0.146 261.8);

Tailwind

colors: {
  custom: {
    50: '#7a8aca',
    500: '#305db3',
    950: '#000000',
  },
}

SCSS

$custom: #305db3;
$custom-light: #7a8aca;
$custom-dark: #000000;

JSON

{
  "hex": "#305db3",
  "rgb": {
    "r": 48,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 219.389,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.49413,
    "c": 0.14563,
    "h": 261.8
  },
  "luminance": 0.11712
}

Semantic roles & 50–950 ramp

primary

#305DB3

secondary

#C6AB79

accent

#AC47E1

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305DB3

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

Preview Lab → · Contrast checker → · Palette generator →