#305BB4#305BB4

#305BB4 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.1% C 0.149 H 262.8°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#305BB4
RGB	rgb(48, 91, 180)
HSL	hsl(220, 58%, 45%)
HSV	hsv(220, 73%, 71%)
CMYK	cmyk(73.3%, 49.4%, 0%, 29.4%)
CIE-LAB	lab(40.25, 16.43, -51.63)
CIE-LCH	lch(40.25, 54.18, 287.65°)
OKLab	oklab(49.05% -0.0188 -0.1483)
OKLCH	oklch(49.05% 0.149 262.8)
XYZ	xyz(13.1953, 11.4044, 44.6770)
Luminance	0.1141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305BB4 #B48930

analogous

#309DB4 #305BB4 #4730B4

triadic

#305BB4 #B4305B #5BB430

tetradic

#305BB4 #B4309D #B48930 #30B447

square

#305BB4 #B4309D #B48930 #30B447

split-complementary

#305BB4 #B44730 #9DB430

monochromatic

#162A53 #234384 #305BB4 #517AD1 #819FDD

Accessibility & contrast

On white

6.40

#305BB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#305BB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305BB4

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305BB4	#FFFFFF	#000000	##FFFFFF
##305BB4	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2865B7

Deuteranopia (green-blind)

#0059B2

Tritanopia (blue-blind)

#00707F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #305bb4;
/* rgb */ color: rgb(48, 91, 180);
/* oklch */ color: oklch(49.1% 0.149 262.8);

Tailwind

colors: {
  custom: {
    50: '#7a88cb',
    500: '#305bb4',
    950: '#000000',
  },
}

SCSS

$custom: #305bb4;
$custom-light: #7a88cb;
$custom-dark: #000000;

JSON

{
  "hex": "#305bb4",
  "rgb": {
    "r": 48,
    "g": 91,
    "b": 180
  },
  "hsl": {
    "h": 220.455,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.49053,
    "c": 0.14947,
    "h": 262.8
  },
  "luminance": 0.11406
}

Semantic roles & 50–950 ramp

primary

#305BB4

secondary

#C6AD79

accent

#AF47E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305BB4

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

Preview Lab → · Contrast checker → · Palette generator →