#305CA3#305CA3

#305CA3 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.1% C 0.125 H 259.5°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#305CA3
RGB	rgb(48, 92, 163)
HSL	hsl(217, 55%, 41%)
HSV	hsv(217, 71%, 64%)
CMYK	cmyk(70.6%, 43.6%, 0%, 36.1%)
CIE-LAB	lab(39.46, 9.37, -42.86)
CIE-LCH	lch(39.46, 43.87, 282.33°)
OKLab	oklab(48.09% -0.0226 -0.1225)
OKLCH	oklch(48.09% 0.125 259.5)
XYZ	xyz(11.6546, 10.9258, 36.1379)
Luminance	0.1093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305CA3 #A37730

analogous

#3096A3 #305CA3 #3E30A3

triadic

#305CA3 #A3305C #5CA330

tetradic

#305CA3 #A33096 #A37730 #30A33E

square

#305CA3 #A33096 #A37730 #30A33E

split-complementary

#305CA3 #A33E30 #96A330

monochromatic

#142744 #224174 #305CA3 #4779C9 #779BD7

Accessibility & contrast

On white

6.59

#305CA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#305CA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305CA3

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305CA3	#FFFFFF	#000000	##FFFFFF
##305CA3	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A63A6

Deuteranopia (green-blind)

#2658A2

Tritanopia (blue-blind)

#006C77

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #305ca3;
/* rgb */ color: rgb(48, 92, 163);
/* oklch */ color: oklch(48.1% 0.125 259.5);

Tailwind

colors: {
  custom: {
    50: '#7689bf',
    500: '#305ca3',
    950: '#000000',
  },
}

SCSS

$custom: #305ca3;
$custom-light: #7689bf;
$custom-dark: #000000;

JSON

{
  "hex": "#305ca3",
  "rgb": {
    "r": 48,
    "g": 92,
    "b": 163
  },
  "hsl": {
    "h": 217.043,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.4809,
    "c": 0.12454,
    "h": 259.5
  },
  "luminance": 0.10927
}

Semantic roles & 50–950 ramp

primary

#305CA3

secondary

#BFA170

accent

#A54ADE

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #305CA3

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

Preview Lab → · Contrast checker → · Palette generator →