#305AB5#305AB5

#305AB5 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 48.9% C 0.152 H 263.3°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#305AB5
RGB	rgb(48, 90, 181)
HSL	hsl(221, 58%, 45%)
HSV	hsv(221, 73%, 71%)
CMYK	cmyk(73.5%, 50.3%, 0%, 29%)
CIE-LAB	lab(40.04, 17.46, -52.56)
CIE-LCH	lch(40.04, 55.38, 288.37°)
OKLab	oklab(48.91% -0.0178 -0.151)
OKLCH	oklch(48.91% 0.152 263.3)
XYZ	xyz(13.2126, 11.2755, 45.1872)
Luminance	0.1128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305AB5 #B58B30

analogous

#309CB5 #305AB5 #4930B5

triadic

#305AB5 #B5305A #5AB530

tetradic

#305AB5 #B5309C #B58B30 #30B549

square

#305AB5 #B5309C #B58B30 #30B549

split-complementary

#305AB5 #B54930 #9CB530

monochromatic

#162A54 #234285 #305AB5 #517AD1 #829FDE

Accessibility & contrast

On white

6.45

#305AB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#305AB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305AB5

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305AB5	#FFFFFF	#000000	##FFFFFF
##305AB5	1.00	6.45	3.26	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2465B8

Deuteranopia (green-blind)

#0059B3

Tritanopia (blue-blind)

#00707F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #305ab5;
/* rgb */ color: rgb(48, 90, 181);
/* oklch */ color: oklch(48.9% 0.152 263.3);

Tailwind

colors: {
  custom: {
    50: '#7a88cc',
    500: '#305ab5',
    950: '#000000',
  },
}

SCSS

$custom: #305ab5;
$custom-light: #7a88cc;
$custom-dark: #000000;

JSON

{
  "hex": "#305ab5",
  "rgb": {
    "r": 48,
    "g": 90,
    "b": 181
  },
  "hsl": {
    "h": 221.053,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.48912,
    "c": 0.15209,
    "h": 263.3
  },
  "luminance": 0.11277
}

Semantic roles & 50–950 ramp

primary

#305AB5

secondary

#C7AF7A

accent

#B046E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305AB5

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

Preview Lab → · Contrast checker → · Palette generator →