#305FBB#305FBB

#305FBB is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.4% C 0.154 H 262.1°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#305FBB
RGB	rgb(48, 95, 187)
HSL	hsl(220, 59%, 46%)
HSV	hsv(220, 74%, 73%)
CMYK	cmyk(74.3%, 49.2%, 0%, 26.7%)
CIE-LAB	lab(41.84, 16.47, -53.16)
CIE-LCH	lch(41.84, 55.66, 287.21°)
OKLab	oklab(50.42% -0.0213 -0.1527)
OKLCH	oklch(50.42% 0.154 262.1)
XYZ	xyz(14.2776, 12.3991, 48.6449)
Luminance	0.1240 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FBB #BB8C30

analogous

#30A4BB #305FBB #4630BB

triadic

#305FBB #BB305F #5FBB30

tetradic

#305FBB #BB30A4 #BB8C30 #30BB46

square

#305FBB #BB30A4 #BB8C30 #30BB46

split-complementary

#305FBB #BB4630 #A4BB30

monochromatic

#172E5A #23468A #305FBB #5580D3 #86A4E0

Accessibility & contrast

On white

6.03

#305FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#305FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FBB

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FBB	#FFFFFF	#000000	##FFFFFF
##305FBB	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A69BE

Deuteranopia (green-blind)

#005DB9

Tritanopia (blue-blind)

#007584

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #305fbb;
/* rgb */ color: rgb(48, 95, 187);
/* oklch */ color: oklch(50.4% 0.154 262.1);

Tailwind

colors: {
  custom: {
    50: '#7b8bd0',
    500: '#305fbb',
    950: '#000000',
  },
}

SCSS

$custom: #305fbb;
$custom-light: #7b8bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#305fbb",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 187
  },
  "hsl": {
    "h": 219.712,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.50418,
    "c": 0.15419,
    "h": 262.1
  },
  "luminance": 0.12401
}

Semantic roles & 50–950 ramp

primary

#305FBB

secondary

#C9B07D

accent

#AD45E2

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #305FBB

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

Preview Lab → · Contrast checker → · Palette generator →