#305DA4#305DA4

#305DA4 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.4% C 0.125 H 259.2°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#305DA4
RGB	rgb(48, 93, 164)
HSL	hsl(217, 55%, 42%)
HSV	hsv(217, 71%, 64%)
CMYK	cmyk(70.7%, 43.3%, 0%, 35.7%)
CIE-LAB	lab(39.81, 9.10, -42.89)
CIE-LCH	lch(39.81, 43.84, 281.98°)
OKLab	oklab(48.38% -0.0234 -0.1225)
OKLCH	oklch(48.38% 0.125 259.2)
XYZ	xyz(11.8317, 11.1362, 36.6407)
Luminance	0.1114 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305DA4 #A47730

analogous

#3097A4 #305DA4 #3D30A4

triadic

#305DA4 #A4305D #5DA430

tetradic

#305DA4 #A43097 #A47730 #30A43D

square

#305DA4 #A43097 #A47730 #30A43D

split-complementary

#305DA4 #A43D30 #97A430

monochromatic

#142745 #224275 #305DA4 #487AC9 #779CD7

Accessibility & contrast

On white

6.51

#305DA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#305DA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305DA4

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305DA4	#FFFFFF	#000000	##FFFFFF
##305DA4	1.00	6.51	3.23	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B64A7

Deuteranopia (green-blind)

#2759A3

Tritanopia (blue-blind)

#006D78

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #305da4;
/* rgb */ color: rgb(48, 93, 164);
/* oklch */ color: oklch(48.4% 0.125 259.2);

Tailwind

colors: {
  custom: {
    50: '#768abf',
    500: '#305da4',
    950: '#000000',
  },
}

SCSS

$custom: #305da4;
$custom-light: #768abf;
$custom-dark: #000000;

JSON

{
  "hex": "#305da4",
  "rgb": {
    "r": 48,
    "g": 93,
    "b": 164
  },
  "hsl": {
    "h": 216.724,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.48383,
    "c": 0.12475,
    "h": 259.2
  },
  "luminance": 0.11137
}

Semantic roles & 50–950 ramp

primary

#305DA4

secondary

#BFA170

accent

#A54ADE

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #305DA4

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

Preview Lab → · Contrast checker → · Palette generator →