#305EB3#305EB3

#305EB3 is a mid, vivid blue. Relative luminance 0.119; OKLCH L 49.6% C 0.144 H 261.4°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#305EB3
RGB	rgb(48, 94, 179)
HSL	hsl(219, 58%, 45%)
HSV	hsv(219, 73%, 70%)
CMYK	cmyk(73.2%, 47.5%, 0%, 29.8%)
CIE-LAB	lab(41.04, 14.10, -49.78)
CIE-LCH	lch(41.04, 51.74, 285.81°)
OKLab	oklab(49.63% -0.0216 -0.1428)
OKLCH	oklch(49.63% 0.144 261.4)
XYZ	xyz(13.3554, 11.8870, 44.2296)
Luminance	0.1189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305EB3 #B38530

analogous

#30A0B3 #305EB3 #4330B3

triadic

#305EB3 #B3305E #5EB330

tetradic

#305EB3 #B330A0 #B38530 #30B343

square

#305EB3 #B330A0 #B38530 #30B343

split-complementary

#305EB3 #B34330 #A0B330

monochromatic

#162B52 #234583 #305EB3 #507DD0 #80A1DD

Accessibility & contrast

On white

6.22

#305EB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#305EB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305EB3

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305EB3	#FFFFFF	#000000	##FFFFFF
##305EB3	1.00	6.22	3.38	6.22
#FFFFFF	6.22	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3067B6

Deuteranopia (green-blind)

#0E5BB1

Tritanopia (blue-blind)

#007280

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #305eb3;
/* rgb */ color: rgb(48, 94, 179);
/* oklch */ color: oklch(49.6% 0.144 261.4);

Tailwind

colors: {
  custom: {
    50: '#798bca',
    500: '#305eb3',
    950: '#000000',
  },
}

SCSS

$custom: #305eb3;
$custom-light: #798bca;
$custom-dark: #000000;

JSON

{
  "hex": "#305eb3",
  "rgb": {
    "r": 48,
    "g": 94,
    "b": 179
  },
  "hsl": {
    "h": 218.931,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.49631,
    "c": 0.14441,
    "h": 261.4
  },
  "luminance": 0.11888
}

Semantic roles & 50–950 ramp

primary

#305EB3

secondary

#C6AB79

accent

#AB47E1

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305EB3

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

Preview Lab → · Contrast checker → · Palette generator →