#305FA3#305FA3

#305FA3 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 48.8% C 0.121 H 257.8°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#305FA3
RGB	rgb(48, 95, 163)
HSL	hsl(215, 55%, 41%)
HSV	hsv(215, 71%, 64%)
CMYK	cmyk(70.6%, 41.7%, 0%, 36.1%)
CIE-LAB	lab(40.34, 7.44, -41.45)
CIE-LCH	lch(40.34, 42.11, 280.17°)
OKLab	oklab(48.77% -0.0255 -0.1183)
OKLCH	oklch(48.77% 0.121 257.8)
XYZ	xyz(11.9196, 11.4559, 36.2263)
Luminance	0.1146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FA3 #A37430

analogous

#3099A3 #305FA3 #3B30A3

triadic

#305FA3 #A3305F #5FA330

tetradic

#305FA3 #A33099 #A37430 #30A33B

square

#305FA3 #A33099 #A37430 #30A33B

split-complementary

#305FA3 #A33B30 #99A330

monochromatic

#142844 #224374 #305FA3 #477CC9 #779ED7

Accessibility & contrast

On white

6.38

#305FA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#305FA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FA3

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FA3	#FFFFFF	#000000	##FFFFFF
##305FA3	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F65A6

Deuteranopia (green-blind)

#2D5AA2

Tritanopia (blue-blind)

#006F79

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #305fa3;
/* rgb */ color: rgb(48, 95, 163);
/* oklch */ color: oklch(48.8% 0.121 257.8);

Tailwind

colors: {
  custom: {
    50: '#768bbf',
    500: '#305fa3',
    950: '#000000',
  },
}

SCSS

$custom: #305fa3;
$custom-light: #768bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#305fa3",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 163
  },
  "hsl": {
    "h": 215.478,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.48774,
    "c": 0.12101,
    "h": 257.8
  },
  "luminance": 0.11457
}

Semantic roles & 50–950 ramp

primary

#305FA3

secondary

#BF9F70

accent

#A14ADE

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #305FA3

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

Preview Lab → · Contrast checker → · Palette generator →