#305CA4#305CA4

#305CA4 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.2% C 0.126 H 259.8°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#305CA4
RGB	rgb(48, 92, 164)
HSL	hsl(217, 55%, 42%)
HSV	hsv(217, 71%, 64%)
CMYK	cmyk(70.7%, 43.9%, 0%, 35.7%)
CIE-LAB	lab(39.52, 9.75, -43.36)
CIE-LCH	lch(39.52, 44.44, 282.67°)
OKLab	oklab(48.16% -0.0224 -0.1239)
OKLCH	oklch(48.16% 0.126 259.8)
XYZ	xyz(11.7445, 10.9618, 36.6116)
Luminance	0.1096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305CA4 #A47830

analogous

#3096A4 #305CA4 #3E30A4

triadic

#305CA4 #A4305C #5CA430

tetradic

#305CA4 #A43096 #A47830 #30A43E

square

#305CA4 #A43096 #A47830 #30A43E

split-complementary

#305CA4 #A43E30 #96A430

monochromatic

#142745 #224175 #305CA4 #4879C9 #779CD7

Accessibility & contrast

On white

6.58

#305CA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#305CA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305CA4

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305CA4	#FFFFFF	#000000	##FFFFFF
##305CA4	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3963A7

Deuteranopia (green-blind)

#2558A3

Tritanopia (blue-blind)

#006D78

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #305ca4;
/* rgb */ color: rgb(48, 92, 164);
/* oklch */ color: oklch(48.2% 0.126 259.8);

Tailwind

colors: {
  custom: {
    50: '#7689bf',
    500: '#305ca4',
    950: '#000000',
  },
}

SCSS

$custom: #305ca4;
$custom-light: #7689bf;
$custom-dark: #000000;

JSON

{
  "hex": "#305ca4",
  "rgb": {
    "r": 48,
    "g": 92,
    "b": 164
  },
  "hsl": {
    "h": 217.241,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.48157,
    "c": 0.12594,
    "h": 259.8
  },
  "luminance": 0.10963
}

Semantic roles & 50–950 ramp

primary

#305CA4

secondary

#BFA170

accent

#A64ADE

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #305CA4

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

Preview Lab → · Contrast checker → · Palette generator →