#305CB5#305CB5

#305CB5 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.3% C 0.150 H 262.5°. Best body text is #FFFFFF at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#305CB5
RGB	rgb(48, 92, 181)
HSL	hsl(220, 58%, 45%)
HSV	hsv(220, 73%, 71%)
CMYK	cmyk(73.5%, 49.2%, 0%, 29%)
CIE-LAB	lab(40.60, 16.15, -51.66)
CIE-LCH	lch(40.60, 54.12, 287.36°)
OKLab	oklab(49.34% -0.0195 -0.1483)
OKLCH	oklch(49.34% 0.15 262.5)
XYZ	xyz(13.3836, 11.6174, 45.2441)
Luminance	0.1162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305CB5 #B58930

analogous

#309FB5 #305CB5 #4630B5

triadic

#305CB5 #B5305C #5CB530

tetradic

#305CB5 #B5309F #B58930 #30B546

square

#305CB5 #B5309F #B58930 #30B546

split-complementary

#305CB5 #B54630 #9FB530

monochromatic

#162B54 #234385 #305CB5 #517CD1 #82A0DE

Accessibility & contrast

On white

6.32

#305CB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#305CB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305CB5

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305CB5	#FFFFFF	#000000	##FFFFFF
##305CB5	1.00	6.32	3.32	6.32
#FFFFFF	6.32	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2966B8

Deuteranopia (green-blind)

#005AB3

Tritanopia (blue-blind)

#007180

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #305cb5;
/* rgb */ color: rgb(48, 92, 181);
/* oklch */ color: oklch(49.3% 0.150 262.5);

Tailwind

colors: {
  custom: {
    50: '#7a89cc',
    500: '#305cb5',
    950: '#000000',
  },
}

SCSS

$custom: #305cb5;
$custom-light: #7a89cc;
$custom-dark: #000000;

JSON

{
  "hex": "#305cb5",
  "rgb": {
    "r": 48,
    "g": 92,
    "b": 181
  },
  "hsl": {
    "h": 220.15,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4934,
    "c": 0.14962,
    "h": 262.5
  },
  "luminance": 0.11619
}

Semantic roles & 50–950 ramp

primary

#305CB5

secondary

#C7AD7A

accent

#AE46E1

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305CB5

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

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