#305DB8#305DB8

#305DB8 is a mid, vivid blue. Relative luminance 0.119; OKLCH L 49.8% C 0.153 H 262.5°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#305DB8
RGB	rgb(48, 93, 184)
HSL	hsl(220, 59%, 45%)
HSV	hsv(220, 74%, 72%)
CMYK	cmyk(73.9%, 49.5%, 0%, 27.8%)
CIE-LAB	lab(41.08, 16.63, -52.64)
CIE-LCH	lch(41.08, 55.20, 287.54°)
OKLab	oklab(49.77% -0.02 -0.1512)
OKLCH	oklch(49.77% 0.153 262.5)
XYZ	xyz(13.7819, 11.9163, 46.9118)
Luminance	0.1192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305DB8 #B88B30

analogous

#30A1B8 #305DB8 #4730B8

triadic

#305DB8 #B8305D #5DB830

tetradic

#305DB8 #B830A1 #B88B30 #30B847

square

#305DB8 #B830A1 #B88B30 #30B847

split-complementary

#305DB8 #B84730 #A1B830

monochromatic

#172C57 #234487 #305DB8 #537DD2 #84A2DF

Accessibility & contrast

On white

6.21

#305DB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#305DB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305DB8

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305DB8	#FFFFFF	#000000	##FFFFFF
##305DB8	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2867BB

Deuteranopia (green-blind)

#005BB6

Tritanopia (blue-blind)

#007382

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #305db8;
/* rgb */ color: rgb(48, 93, 184);
/* oklch */ color: oklch(49.8% 0.153 262.5);

Tailwind

colors: {
  custom: {
    50: '#7b8ace',
    500: '#305db8',
    950: '#000000',
  },
}

SCSS

$custom: #305db8;
$custom-light: #7b8ace;
$custom-dark: #000000;

JSON

{
  "hex": "#305db8",
  "rgb": {
    "r": 48,
    "g": 93,
    "b": 184
  },
  "hsl": {
    "h": 220.147,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.49772,
    "c": 0.15252,
    "h": 262.5
  },
  "luminance": 0.11918
}

Semantic roles & 50–950 ramp

primary

#305DB8

secondary

#C8AF7C

accent

#AE46E2

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #305DB8

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

Preview Lab → · Contrast checker → · Palette generator →