#305FAB#305FAB

#305FAB is a mid, vivid blue. Relative luminance 0.118; OKLCH L 49.3% C 0.132 H 259.6°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#305FAB
RGB	rgb(48, 95, 171)
HSL	hsl(217, 56%, 43%)
HSV	hsv(217, 72%, 67%)
CMYK	cmyk(71.9%, 44.4%, 0%, 32.9%)
CIE-LAB	lab(40.82, 10.44, -45.42)
CIE-LCH	lch(40.82, 46.60, 282.94°)
OKLab	oklab(49.3% -0.0239 -0.1299)
OKLCH	oklch(49.3% 0.132 259.6)
XYZ	xyz(12.6592, 11.7517, 40.1213)
Luminance	0.1175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FAB #AB7C30

analogous

#309CAB #305FAB #3E30AB

triadic

#305FAB #AB305F #5FAB30

tetradic

#305FAB #AB309C #AB7C30 #30AB3E

square

#305FAB #AB309C #AB7C30 #30AB3E

split-complementary

#305FAB #AB3E30 #9CAB30

monochromatic

#152A4B #23447B #305FAB #4C7DCD #7BA0DA

Accessibility & contrast

On white

6.27

#305FAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#305FAB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FAB

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FAB	#FFFFFF	#000000	##FFFFFF
##305FAB	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3966AE

Deuteranopia (green-blind)

#235BA9

Tritanopia (blue-blind)

#00717C

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #305fab;
/* rgb */ color: rgb(48, 95, 171);
/* oklch */ color: oklch(49.3% 0.132 259.6);

Tailwind

colors: {
  custom: {
    50: '#788bc4',
    500: '#305fab',
    950: '#000000',
  },
}

SCSS

$custom: #305fab;
$custom-light: #788bc4;
$custom-dark: #000000;

JSON

{
  "hex": "#305fab",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 171
  },
  "hsl": {
    "h": 217.073,
    "s": 56.164,
    "l": 42.941
  },
  "oklch": {
    "l": 0.49301,
    "c": 0.13213,
    "h": 259.6
  },
  "luminance": 0.11753
}

Semantic roles & 50–950 ramp

primary

#305FAB

secondary

#C3A574

accent

#A648DF

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #305FAB

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

Preview Lab → · Contrast checker → · Palette generator →