#305DBB#305DBB

#305DBB is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.0% C 0.157 H 262.8°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#305DBB
RGB	rgb(48, 93, 187)
HSL	hsl(221, 59%, 46%)
HSV	hsv(221, 74%, 73%)
CMYK	cmyk(74.3%, 50.3%, 0%, 26.7%)
CIE-LAB	lab(41.28, 17.77, -54.06)
CIE-LCH	lch(41.28, 56.91, 288.19°)
OKLab	oklab(49.99% -0.0196 -0.1554)
OKLCH	oklch(49.99% 0.157 262.8)
XYZ	xyz(14.0997, 12.0434, 48.5856)
Luminance	0.1205 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305DBB #BB8E30

analogous

#30A2BB #305DBB #4930BB

triadic

#305DBB #BB305D #5DBB30

tetradic

#305DBB #BB30A2 #BB8E30 #30BB49

square

#305DBB #BB30A2 #BB8E30 #30BB49

split-complementary

#305DBB #BB4930 #A2BB30

monochromatic

#172D5A #23458A #305DBB #557ED3 #86A3E0

Accessibility & contrast

On white

6.16

#305DBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#305DBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305DBB

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305DBB	#FFFFFF	#000000	##FFFFFF
##305DBB	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2468BE

Deuteranopia (green-blind)

#005BB9

Tritanopia (blue-blind)

#007383

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #305dbb;
/* rgb */ color: rgb(48, 93, 187);
/* oklch */ color: oklch(50.0% 0.157 262.8);

Tailwind

colors: {
  custom: {
    50: '#7b8ad0',
    500: '#305dbb',
    950: '#000000',
  },
}

SCSS

$custom: #305dbb;
$custom-light: #7b8ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#305dbb",
  "rgb": {
    "r": 48,
    "g": 93,
    "b": 187
  },
  "hsl": {
    "h": 220.576,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.49991,
    "c": 0.15664,
    "h": 262.8
  },
  "luminance": 0.12045
}

Semantic roles & 50–950 ramp

primary

#305DBB

secondary

#C9B17D

accent

#B045E2

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #305DBB

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

Preview Lab → · Contrast checker → · Palette generator →