#305CB4#305CB4

#305CB4 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.3% C 0.148 H 262.4°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#305CB4
RGB	rgb(48, 92, 180)
HSL	hsl(220, 58%, 45%)
HSV	hsv(220, 73%, 71%)
CMYK	cmyk(73.3%, 48.9%, 0%, 29.4%)
CIE-LAB	lab(40.53, 15.78, -51.18)
CIE-LCH	lch(40.53, 53.55, 287.13°)
OKLab	oklab(49.27% -0.0197 -0.1469)
OKLCH	oklch(49.27% 0.148 262.4)
XYZ	xyz(13.2813, 11.5765, 44.7057)
Luminance	0.1158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305CB4 #B48830

analogous

#309EB4 #305CB4 #4630B4

triadic

#305CB4 #B4305C #5CB430

tetradic

#305CB4 #B4309E #B48830 #30B446

square

#305CB4 #B4309E #B48830 #30B446

split-complementary

#305CB4 #B44630 #9EB430

monochromatic

#162B53 #234384 #305CB4 #517BD1 #81A0DD

Accessibility & contrast

On white

6.33

#305CB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#305CB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305CB4

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305CB4	#FFFFFF	#000000	##FFFFFF
##305CB4	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A66B7

Deuteranopia (green-blind)

#005AB2

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #305cb4;
/* rgb */ color: rgb(48, 92, 180);
/* oklch */ color: oklch(49.3% 0.148 262.4);

Tailwind

colors: {
  custom: {
    50: '#7a89cb',
    500: '#305cb4',
    950: '#000000',
  },
}

SCSS

$custom: #305cb4;
$custom-light: #7a89cb;
$custom-dark: #000000;

JSON

{
  "hex": "#305cb4",
  "rgb": {
    "r": 48,
    "g": 92,
    "b": 180
  },
  "hsl": {
    "h": 220,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.49268,
    "c": 0.14824,
    "h": 262.4
  },
  "luminance": 0.11578
}

Semantic roles & 50–950 ramp

primary

#305CB4

secondary

#C6AD79

accent

#AE47E1

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305CB4

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

Preview Lab → · Contrast checker → · Palette generator →