#305FB5#305FB5

#305FB5 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.0% C 0.146 H 261.3°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#305FB5
RGB	rgb(48, 95, 181)
HSL	hsl(219, 58%, 45%)
HSV	hsv(219, 73%, 71%)
CMYK	cmyk(73.5%, 47.5%, 0%, 29%)
CIE-LAB	lab(41.45, 14.20, -50.29)
CIE-LCH	lch(41.45, 52.26, 285.77°)
OKLab	oklab(49.99% -0.0221 -0.1443)
OKLCH	oklch(49.99% 0.146 261.3)
XYZ	xyz(13.6486, 12.1475, 45.3325)
Luminance	0.1215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FB5 #B58630

analogous

#30A2B5 #305FB5 #4330B5

triadic

#305FB5 #B5305F #5FB530

tetradic

#305FB5 #B530A2 #B58630 #30B543

square

#305FB5 #B530A2 #B58630 #30B543

split-complementary

#305FB5 #B54330 #A2B530

monochromatic

#162C54 #234685 #305FB5 #517ED1 #82A2DE

Accessibility & contrast

On white

6.12

#305FB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#305FB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FB5

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FB5	#FFFFFF	#000000	##FFFFFF
##305FB5	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3168B8

Deuteranopia (green-blind)

#0D5CB3

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #305fb5;
/* rgb */ color: rgb(48, 95, 181);
/* oklch */ color: oklch(50.0% 0.146 261.3);

Tailwind

colors: {
  custom: {
    50: '#7a8bcc',
    500: '#305fb5',
    950: '#000000',
  },
}

SCSS

$custom: #305fb5;
$custom-light: #7a8bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#305fb5",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 181
  },
  "hsl": {
    "h": 218.797,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4999,
    "c": 0.14596,
    "h": 261.3
  },
  "luminance": 0.12149
}

Semantic roles & 50–950 ramp

primary

#305FB5

secondary

#C7AC7A

accent

#AB46E1

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #305FB5

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

Preview Lab → · Contrast checker → · Palette generator →