#305EB5#305EB5

#305EB5 is a mid, vivid blue. Relative luminance 0.120; OKLCH L 49.8% C 0.147 H 261.7°. Best body text is #FFFFFF at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#305EB5
RGB	rgb(48, 94, 181)
HSL	hsl(219, 58%, 45%)
HSV	hsv(219, 73%, 71%)
CMYK	cmyk(73.5%, 48.1%, 0%, 29%)
CIE-LAB	lab(41.17, 14.85, -50.75)
CIE-LCH	lch(41.17, 52.88, 286.31°)
OKLab	oklab(49.77% -0.0213 -0.1456)
OKLCH	oklch(49.77% 0.147 261.7)
XYZ	xyz(13.5591, 11.9685, 45.3027)
Luminance	0.1197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305EB5 #B58730

analogous

#30A1B5 #305EB5 #4430B5

triadic

#305EB5 #B5305E #5EB530

tetradic

#305EB5 #B530A1 #B58730 #30B544

square

#305EB5 #B530A1 #B58730 #30B544

split-complementary

#305EB5 #B54430 #A1B530

monochromatic

#162C54 #234585 #305EB5 #517DD1 #82A2DE

Accessibility & contrast

On white

6.19

#305EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#305EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305EB5

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305EB5	#FFFFFF	#000000	##FFFFFF
##305EB5	1.00	6.19	3.39	6.19
#FFFFFF	6.19	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E68B8

Deuteranopia (green-blind)

#065BB3

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #305eb5;
/* rgb */ color: rgb(48, 94, 181);
/* oklch */ color: oklch(49.8% 0.147 261.7);

Tailwind

colors: {
  custom: {
    50: '#7a8bcc',
    500: '#305eb5',
    950: '#000000',
  },
}

SCSS

$custom: #305eb5;
$custom-light: #7a8bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#305eb5",
  "rgb": {
    "r": 48,
    "g": 94,
    "b": 181
  },
  "hsl": {
    "h": 219.248,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.49772,
    "c": 0.14718,
    "h": 261.7
  },
  "luminance": 0.1197
}

Semantic roles & 50–950 ramp

primary

#305EB5

secondary

#C7AC7A

accent

#AC46E1

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305EB5

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

Preview Lab → · Contrast checker → · Palette generator →