#305FB4#305FB4

#305FB4 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 49.9% C 0.145 H 261.1°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#305FB4
RGB	rgb(48, 95, 180)
HSL	hsl(219, 58%, 45%)
HSV	hsv(219, 73%, 71%)
CMYK	cmyk(73.3%, 47.2%, 0%, 29.4%)
CIE-LAB	lab(41.38, 13.83, -49.81)
CIE-LCH	lch(41.38, 51.69, 285.51°)
OKLab	oklab(49.92% -0.0223 -0.1428)
OKLCH	oklch(49.92% 0.145 261.1)
XYZ	xyz(13.5464, 12.1066, 44.7940)
Luminance	0.1211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FB4 #B48530

analogous

#30A1B4 #305FB4 #4330B4

triadic

#305FB4 #B4305F #5FB430

tetradic

#305FB4 #B430A1 #B48530 #30B443

square

#305FB4 #B430A1 #B48530 #30B443

split-complementary

#305FB4 #B44330 #A1B430

monochromatic

#162C53 #234684 #305FB4 #517ED1 #81A2DD

Accessibility & contrast

On white

6.14

#305FB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#305FB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FB4

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FB4	#FFFFFF	#000000	##FFFFFF
##305FB4	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3268B7

Deuteranopia (green-blind)

#105CB2

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #305fb4;
/* rgb */ color: rgb(48, 95, 180);
/* oklch */ color: oklch(49.9% 0.145 261.1);

Tailwind

colors: {
  custom: {
    50: '#7a8bcb',
    500: '#305fb4',
    950: '#000000',
  },
}

SCSS

$custom: #305fb4;
$custom-light: #7a8bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#305fb4",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 180
  },
  "hsl": {
    "h": 218.636,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.4992,
    "c": 0.14458,
    "h": 261.1
  },
  "luminance": 0.12108
}

Semantic roles & 50–950 ramp

primary

#305FB4

secondary

#C6AB79

accent

#AA47E1

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #305FB4

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

Preview Lab → · Contrast checker → · Palette generator →