#305FA4#305FA4

#305FA4 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 48.8% C 0.122 H 258.1°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#305FA4
RGB	rgb(48, 95, 164)
HSL	hsl(216, 55%, 42%)
HSV	hsv(216, 71%, 64%)
CMYK	cmyk(70.7%, 42.1%, 0%, 35.7%)
CIE-LAB	lab(40.40, 7.81, -41.95)
CIE-LCH	lch(40.40, 42.67, 280.54°)
OKLab	oklab(48.84% -0.0253 -0.1197)
OKLCH	oklch(48.84% 0.122 258.1)
XYZ	xyz(12.0095, 11.4919, 36.7000)
Luminance	0.1149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FA4 #A47530

analogous

#3099A4 #305FA4 #3B30A4

triadic

#305FA4 #A4305F #5FA430

tetradic

#305FA4 #A43099 #A47530 #30A43B

square

#305FA4 #A43099 #A47530 #30A43B

split-complementary

#305FA4 #A43B30 #99A430

monochromatic

#142845 #224475 #305FA4 #487CC9 #779ED7

Accessibility & contrast

On white

6.37

#305FA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#305FA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FA4

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FA4	#FFFFFF	#000000	##FFFFFF
##305FA4	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E65A7

Deuteranopia (green-blind)

#2C5AA3

Tritanopia (blue-blind)

#006F79

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #305fa4;
/* rgb */ color: rgb(48, 95, 164);
/* oklch */ color: oklch(48.8% 0.122 258.1);

Tailwind

colors: {
  custom: {
    50: '#768bbf',
    500: '#305fa4',
    950: '#000000',
  },
}

SCSS

$custom: #305fa4;
$custom-light: #768bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#305fa4",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 164
  },
  "hsl": {
    "h": 215.69,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.48838,
    "c": 0.1224,
    "h": 258.1
  },
  "luminance": 0.11493
}

Semantic roles & 50–950 ramp

primary

#305FA4

secondary

#BF9F70

accent

#A24ADE

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #305FA4

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

Preview Lab → · Contrast checker → · Palette generator →