#305FC3#305FC3

#305FC3 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.0% C 0.165 H 263.0°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#305FC3
RGB	rgb(48, 95, 195)
HSL	hsl(221, 60%, 48%)
HSV	hsv(221, 75%, 76%)
CMYK	cmyk(75.4%, 51.3%, 0%, 23.5%)
CIE-LAB	lab(42.39, 19.48, -56.94)
CIE-LCH	lch(42.39, 60.18, 288.89°)
OKLab	oklab(51.01% -0.0202 -0.1638)
OKLCH	oklch(51.01% 0.165 263)
XYZ	xyz(15.1579, 12.7512, 53.2815)
Luminance	0.1275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FC3 #C39430

analogous

#30A9C3 #305FC3 #4A30C3

triadic

#305FC3 #C3305F #5FC330

tetradic

#305FC3 #C330A9 #C39430 #30C34A

square

#305FC3 #C330A9 #C39430 #30C34A

split-complementary

#305FC3 #C34A30 #A9C330

monochromatic

#182F61 #244792 #305FC3 #5A82D6 #8BA7E2

Accessibility & contrast

On white

5.91

#305FC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#305FC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FC3

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FC3	#FFFFFF	#000000	##FFFFFF
##305FC3	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E6BC7

Deuteranopia (green-blind)

#005EC1

Tritanopia (blue-blind)

#007788

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #305fc3;
/* rgb */ color: rgb(48, 95, 195);
/* oklch */ color: oklch(51.0% 0.165 263.0);

Tailwind

colors: {
  custom: {
    50: '#7d8bd6',
    500: '#305fc3',
    950: '#000000',
  },
}

SCSS

$custom: #305fc3;
$custom-light: #7d8bd6;
$custom-dark: #000000;

JSON

{
  "hex": "#305fc3",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 195
  },
  "hsl": {
    "h": 220.816,
    "s": 60.494,
    "l": 47.647
  },
  "oklch": {
    "l": 0.51005,
    "c": 0.16508,
    "h": 263
  },
  "luminance": 0.12753
}

Semantic roles & 50–950 ramp

primary

#305FC3

secondary

#CCB582

accent

#B144E4

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #305FC3

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

Preview Lab → · Contrast checker → · Palette generator →