#305B9E#305B9E

#305B9E is a mid, moderate blue. Relative luminance 0.106; OKLCH L 47.5% C 0.119 H 259.0°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#305B9E
RGB	rgb(48, 91, 158)
HSL	hsl(217, 53%, 40%)
HSV	hsv(217, 70%, 62%)
CMYK	cmyk(69.6%, 42.4%, 0%, 38%)
CIE-LAB	lab(38.86, 8.15, -40.83)
CIE-LCH	lch(38.86, 41.63, 281.28°)
OKLab	oklab(47.53% -0.0227 -0.1165)
OKLCH	oklch(47.53% 0.119 259)
XYZ	xyz(11.1293, 10.5780, 33.7964)
Luminance	0.1058 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305B9E #9E7330

analogous

#30929E #305B9E #3C309E

triadic

#305B9E #9E305B #5B9E30

tetradic

#305B9E #9E3092 #9E7330 #309E3C

square

#305B9E #9E3092 #9E7330 #309E3C

split-complementary

#305B9E #9E3C30 #929E30

monochromatic

#132540 #22406F #305B9E #4577C6 #749AD5

Accessibility & contrast

On white

6.74

#305B9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#305B9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305B9E

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305B9E	#FFFFFF	#000000	##FFFFFF
##305B9E	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C61A1

Deuteranopia (green-blind)

#2A579D

Tritanopia (blue-blind)

#006A75

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #305b9e;
/* rgb */ color: rgb(48, 91, 158);
/* oklch */ color: oklch(47.5% 0.119 259.0);

Tailwind

colors: {
  custom: {
    50: '#7588bb',
    500: '#305b9e',
    950: '#000000',
  },
}

SCSS

$custom: #305b9e;
$custom-light: #7588bb;
$custom-dark: #000000;

JSON

{
  "hex": "#305b9e",
  "rgb": {
    "r": 48,
    "g": 91,
    "b": 158
  },
  "hsl": {
    "h": 216.545,
    "s": 53.398,
    "l": 40.392
  },
  "oklch": {
    "l": 0.47533,
    "c": 0.1187,
    "h": 259
  },
  "luminance": 0.10579
}

Semantic roles & 50–950 ramp

primary

#305B9E

secondary

#BD9E6D

accent

#A44BDD

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #305B9E

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

Preview Lab → · Contrast checker → · Palette generator →