#305FB8#305FB8

#305FB8 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.2% C 0.150 H 261.7°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#305FB8
RGB	rgb(48, 95, 184)
HSL	hsl(219, 59%, 45%)
HSV	hsv(219, 74%, 72%)
CMYK	cmyk(73.9%, 48.4%, 0%, 27.8%)
CIE-LAB	lab(41.65, 15.33, -51.73)
CIE-LCH	lch(41.65, 53.96, 286.51°)
OKLab	oklab(50.2% -0.0217 -0.1485)
OKLCH	oklch(50.2% 0.15 261.7)
XYZ	xyz(13.9598, 12.2720, 46.9711)
Luminance	0.1227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FB8 #B88930

analogous

#30A3B8 #305FB8 #4530B8

triadic

#305FB8 #B8305F #5FB830

tetradic

#305FB8 #B830A3 #B88930 #30B845

square

#305FB8 #B830A3 #B88930 #30B845

split-complementary

#305FB8 #B84530 #A3B830

monochromatic

#172D57 #234687 #305FB8 #537FD2 #84A3DF

Accessibility & contrast

On white

6.08

#305FB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#305FB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FB8

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FB8	#FFFFFF	#000000	##FFFFFF
##305FB8	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D69BB

Deuteranopia (green-blind)

#005CB6

Tritanopia (blue-blind)

#007482

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #305fb8;
/* rgb */ color: rgb(48, 95, 184);
/* oklch */ color: oklch(50.2% 0.150 261.7);

Tailwind

colors: {
  custom: {
    50: '#7b8bce',
    500: '#305fb8',
    950: '#000000',
  },
}

SCSS

$custom: #305fb8;
$custom-light: #7b8bce;
$custom-dark: #000000;

JSON

{
  "hex": "#305fb8",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 184
  },
  "hsl": {
    "h": 219.265,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.50203,
    "c": 0.15008,
    "h": 261.7
  },
  "luminance": 0.12273
}

Semantic roles & 50–950 ramp

primary

#305FB8

secondary

#C8AE7C

accent

#AC46E2

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #305FB8

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

Preview Lab → · Contrast checker → · Palette generator →