#305AB8#305AB8

#305AB8 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.1% C 0.156 H 263.6°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#305AB8
RGB	rgb(48, 90, 184)
HSL	hsl(221, 59%, 45%)
HSV	hsv(221, 74%, 72%)
CMYK	cmyk(73.9%, 51.1%, 0%, 27.8%)
CIE-LAB	lab(40.25, 18.59, -53.99)
CIE-LCH	lch(40.25, 57.10, 289.00°)
OKLab	oklab(49.13% -0.0175 -0.1552)
OKLCH	oklch(49.13% 0.156 263.6)
XYZ	xyz(13.5237, 11.3999, 46.8258)
Luminance	0.1140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305AB8 #B88E30

analogous

#309EB8 #305AB8 #4A30B8

triadic

#305AB8 #B8305A #5AB830

tetradic

#305AB8 #B8309E #B88E30 #30B84A

square

#305AB8 #B8309E #B88E30 #30B84A

split-complementary

#305AB8 #B84A30 #9EB830

monochromatic

#172B57 #234287 #305AB8 #537AD2 #84A0DF

Accessibility & contrast

On white

6.40

#305AB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#305AB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305AB8

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305AB8	#FFFFFF	#000000	##FFFFFF
##305AB8	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F65BB

Deuteranopia (green-blind)

#0059B6

Tritanopia (blue-blind)

#007180

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #305ab8;
/* rgb */ color: rgb(48, 90, 184);
/* oklch */ color: oklch(49.1% 0.156 263.6);

Tailwind

colors: {
  custom: {
    50: '#7b88ce',
    500: '#305ab8',
    950: '#000000',
  },
}

SCSS

$custom: #305ab8;
$custom-light: #7b88ce;
$custom-dark: #000000;

JSON

{
  "hex": "#305ab8",
  "rgb": {
    "r": 48,
    "g": 90,
    "b": 184
  },
  "hsl": {
    "h": 221.471,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.49134,
    "c": 0.15622,
    "h": 263.6
  },
  "luminance": 0.11401
}

Semantic roles & 50–950 ramp

primary

#305AB8

secondary

#C8B17C

accent

#B246E2

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #305AB8

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

Preview Lab → · Contrast checker → · Palette generator →