#305FD4#305FD4

#305FD4 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.3% C 0.188 H 264.3°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#305FD4
RGB	rgb(48, 95, 212)
HSL	hsl(223, 66%, 51%)
HSV	hsv(223, 77%, 83%)
CMYK	cmyk(77.4%, 55.2%, 0%, 16.9%)
CIE-LAB	lab(43.60, 25.86, -64.76)
CIE-LCH	lch(43.60, 69.73, 291.77°)
OKLab	oklab(52.31% -0.0187 -0.1868)
OKLCH	oklch(52.31% 0.188 264.3)
XYZ	xyz(17.1906, 13.5643, 63.9868)
Luminance	0.1357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FD4 #D4A530

analogous

#30B1D4 #305FD4 #5330D4

triadic

#305FD4 #D4305F #5FD430

tetradic

#305FD4 #D430B1 #D4A530 #30D453

square

#305FD4 #D430B1 #D4A530 #30D453

split-complementary

#305FD4 #D45330 #B1D430

monochromatic

#183272 #2248A5 #305FD4 #6386DF #95ADE9

Accessibility & contrast

On white

5.66

#305FD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#305FD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FD4

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FD4	#FFFFFF	#000000	##FFFFFF
##305FD4	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD8

Deuteranopia (green-blind)

#0060D2

Tritanopia (blue-blind)

#007C90

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #305fd4;
/* rgb */ color: rgb(48, 95, 212);
/* oklch */ color: oklch(52.3% 0.188 264.3);

Tailwind

colors: {
  custom: {
    50: '#818be2',
    500: '#305fd4',
    950: '#000000',
  },
}

SCSS

$custom: #305fd4;
$custom-light: #818be2;
$custom-dark: #000000;

JSON

{
  "hex": "#305fd4",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 212
  },
  "hsl": {
    "h": 222.805,
    "s": 65.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.52311,
    "c": 0.18777,
    "h": 264.3
  },
  "luminance": 0.13566
}

Semantic roles & 50–950 ramp

primary

#305FD4

secondary

#D4BF8C

accent

#B83FE9

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0C0C15

muted

#7D7D84

Preview Lab

Preview with #305FD4

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

Preview Lab → · Contrast checker → · Palette generator →