#305DB1#305DB1

#305DB1 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.3% C 0.143 H 261.5°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#305DB1
RGB	rgb(48, 93, 177)
HSL	hsl(219, 57%, 44%)
HSV	hsv(219, 73%, 69%)
CMYK	cmyk(72.9%, 47.5%, 0%, 30.6%)
CIE-LAB	lab(40.62, 13.99, -49.27)
CIE-LCH	lch(40.62, 51.22, 285.85°)
OKLab	oklab(49.27% -0.021 -0.1413)
OKLCH	oklch(49.27% 0.143 261.5)
XYZ	xyz(13.0662, 11.6300, 43.1426)
Luminance	0.1163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305DB1 #B18430

analogous

#309EB1 #305DB1 #4430B1

triadic

#305DB1 #B1305D #5DB130

tetradic

#305DB1 #B1309E #B18430 #30B144

square

#305DB1 #B1309E #B18430 #30B144

split-complementary

#305DB1 #B14430 #9EB130

monochromatic

#162A51 #234481 #305DB1 #4F7CCF #7FA0DC

Accessibility & contrast

On white

6.31

#305DB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#305DB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305DB1

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305DB1	#FFFFFF	#000000	##FFFFFF
##305DB1	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3066B4

Deuteranopia (green-blind)

#0F5AAF

Tritanopia (blue-blind)

#00717E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #305db1;
/* rgb */ color: rgb(48, 93, 177);
/* oklch */ color: oklch(49.3% 0.143 261.5);

Tailwind

colors: {
  custom: {
    50: '#798ac9',
    500: '#305db1',
    950: '#000000',
  },
}

SCSS

$custom: #305db1;
$custom-light: #798ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#305db1",
  "rgb": {
    "r": 48,
    "g": 93,
    "b": 177
  },
  "hsl": {
    "h": 219.07,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.49272,
    "c": 0.14286,
    "h": 261.5
  },
  "luminance": 0.11631
}

Semantic roles & 50–950 ramp

primary

#305DB1

secondary

#C5AA78

accent

#AB47E1

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305DB1

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

Preview Lab → · Contrast checker → · Palette generator →