#305FC5#305FC5

#305FC5 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.2% C 0.168 H 263.1°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#305FC5
RGB	rgb(48, 95, 197)
HSL	hsl(221, 61%, 48%)
HSV	hsv(221, 76%, 77%)
CMYK	cmyk(75.6%, 51.8%, 0%, 22.7%)
CIE-LAB	lab(42.52, 20.24, -57.87)
CIE-LCH	lch(42.52, 61.31, 289.27°)
OKLab	oklab(51.15% -0.02 -0.1666)
OKLCH	oklch(51.15% 0.168 263.1)
XYZ	xyz(15.3856, 12.8423, 54.4804)
Luminance	0.1284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FC5 #C59630

analogous

#30A9C5 #305FC5 #4C30C5

triadic

#305FC5 #C5305F #5FC530

tetradic

#305FC5 #C530A9 #C59630 #30C54C

square

#305FC5 #C530A9 #C59630 #30C54C

split-complementary

#305FC5 #C54C30 #A9C530

monochromatic

#183063 #244794 #305FC5 #5B82D7 #8CA8E3

Accessibility & contrast

On white

5.88

#305FC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#305FC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FC5

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FC5	#FFFFFF	#000000	##FFFFFF
##305FC5	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A6CC9

Deuteranopia (green-blind)

#005EC3

Tritanopia (blue-blind)

#007889

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #305fc5;
/* rgb */ color: rgb(48, 95, 197);
/* oklch */ color: oklch(51.2% 0.168 263.1);

Tailwind

colors: {
  custom: {
    50: '#7d8bd7',
    500: '#305fc5',
    950: '#000000',
  },
}

SCSS

$custom: #305fc5;
$custom-light: #7d8bd7;
$custom-dark: #000000;

JSON

{
  "hex": "#305fc5",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 197
  },
  "hsl": {
    "h": 221.074,
    "s": 60.816,
    "l": 48.039
  },
  "oklch": {
    "l": 0.51155,
    "c": 0.16778,
    "h": 263.1
  },
  "luminance": 0.12844
}

Semantic roles & 50–950 ramp

primary

#305FC5

secondary

#CDB684

accent

#B144E4

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #305FC5

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

Preview Lab → · Contrast checker → · Palette generator →