#305BB0#305BB0

#305BB0 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.8% C 0.144 H 262.3°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#305BB0
RGB	rgb(48, 91, 176)
HSL	hsl(220, 57%, 44%)
HSV	hsv(220, 73%, 69%)
CMYK	cmyk(72.7%, 48.3%, 0%, 31%)
CIE-LAB	lab(39.99, 14.92, -49.70)
CIE-LCH	lch(39.99, 51.89, 286.71°)
OKLab	oklab(48.77% -0.0194 -0.1426)
OKLCH	oklch(48.77% 0.144 262.3)
XYZ	xyz(12.7937, 11.2438, 42.5619)
Luminance	0.1124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305BB0 #B08530

analogous

#309BB0 #305BB0 #4530B0

triadic

#305BB0 #B0305B #5BB030

tetradic

#305BB0 #B0309B #B08530 #30B045

square

#305BB0 #B0309B #B08530 #30B045

split-complementary

#305BB0 #B04530 #9BB030

monochromatic

#162950 #234280 #305BB0 #4E7ACF #7E9EDC

Accessibility & contrast

On white

6.46

#305BB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#305BB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305BB0

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305BB0	#FFFFFF	#000000	##FFFFFF
##305BB0	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C64B3

Deuteranopia (green-blind)

#0659AE

Tritanopia (blue-blind)

#006F7D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #305bb0;
/* rgb */ color: rgb(48, 91, 176);
/* oklch */ color: oklch(48.8% 0.144 262.3);

Tailwind

colors: {
  custom: {
    50: '#7988c8',
    500: '#305bb0',
    950: '#000000',
  },
}

SCSS

$custom: #305bb0;
$custom-light: #7988c8;
$custom-dark: #000000;

JSON

{
  "hex": "#305bb0",
  "rgb": {
    "r": 48,
    "g": 91,
    "b": 176
  },
  "hsl": {
    "h": 219.844,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.48765,
    "c": 0.14392,
    "h": 262.3
  },
  "luminance": 0.11245
}

Semantic roles & 50–950 ramp

primary

#305BB0

secondary

#C5AB77

accent

#AD47E0

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305BB0

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

Preview Lab → · Contrast checker → · Palette generator →