#305AB4#305AB4

#305AB4 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.8% C 0.151 H 263.2°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#305AB4
RGB	rgb(48, 90, 180)
HSL	hsl(221, 58%, 45%)
HSV	hsv(221, 73%, 71%)
CMYK	cmyk(73.3%, 50%, 0%, 29.4%)
CIE-LAB	lab(39.97, 17.08, -52.08)
CIE-LCH	lch(39.97, 54.81, 288.16°)
OKLab	oklab(48.84% -0.018 -0.1496)
OKLCH	oklch(48.84% 0.151 263.2)
XYZ	xyz(13.1104, 11.2346, 44.6487)
Luminance	0.1124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305AB4 #B48A30

analogous

#309CB4 #305AB4 #4830B4

triadic

#305AB4 #B4305A #5AB430

tetradic

#305AB4 #B4309C #B48A30 #30B448

square

#305AB4 #B4309C #B48A30 #30B448

split-complementary

#305AB4 #B44830 #9CB430

monochromatic

#162A53 #234284 #305AB4 #5179D1 #819EDD

Accessibility & contrast

On white

6.47

#305AB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#305AB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305AB4

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305AB4	#FFFFFF	#000000	##FFFFFF
##305AB4	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2565B7

Deuteranopia (green-blind)

#0058B2

Tritanopia (blue-blind)

#006F7E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #305ab4;
/* rgb */ color: rgb(48, 90, 180);
/* oklch */ color: oklch(48.8% 0.151 263.2);

Tailwind

colors: {
  custom: {
    50: '#7a88cb',
    500: '#305ab4',
    950: '#000000',
  },
}

SCSS

$custom: #305ab4;
$custom-light: #7a88cb;
$custom-dark: #000000;

JSON

{
  "hex": "#305ab4",
  "rgb": {
    "r": 48,
    "g": 90,
    "b": 180
  },
  "hsl": {
    "h": 220.909,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.48838,
    "c": 0.15071,
    "h": 263.2
  },
  "luminance": 0.11236
}

Semantic roles & 50–950 ramp

primary

#305AB4

secondary

#C6AE79

accent

#B047E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305AB4

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

Preview Lab → · Contrast checker → · Palette generator →