#305BBC#305BBC

#305BBC is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.6% C 0.160 H 263.6°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#305BBC
RGB	rgb(48, 91, 188)
HSL	hsl(222, 59%, 46%)
HSV	hsv(222, 74%, 74%)
CMYK	cmyk(74.5%, 51.6%, 0%, 26.3%)
CIE-LAB	lab(40.80, 19.45, -55.43)
CIE-LCH	lch(40.80, 58.74, 289.33°)
OKLab	oklab(49.64% -0.0178 -0.1595)
OKLCH	oklch(49.64% 0.16 263.6)
XYZ	xyz(14.0339, 11.7398, 49.0936)
Luminance	0.1174 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305BBC #BC9130

analogous

#30A1BC #305BBC #4B30BC

triadic

#305BBC #BC305B #5BBC30

tetradic

#305BBC #BC30A1 #BC9130 #30BC4B

square

#305BBC #BC30A1 #BC9130 #30BC4B

split-complementary

#305BBC #BC4B30 #A1BC30

monochromatic

#172C5A #24438B #305BBC #557CD4 #86A2E0

Accessibility & contrast

On white

6.27

#305BBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#305BBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305BBC

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305BBC	#FFFFFF	#000000	##FFFFFF
##305BBC	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C67BF

Deuteranopia (green-blind)

#005ABA

Tritanopia (blue-blind)

#007283

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #305bbc;
/* rgb */ color: rgb(48, 91, 188);
/* oklch */ color: oklch(49.6% 0.160 263.6);

Tailwind

colors: {
  custom: {
    50: '#7c88d1',
    500: '#305bbc',
    950: '#000000',
  },
}

SCSS

$custom: #305bbc;
$custom-light: #7c88d1;
$custom-dark: #000000;

JSON

{
  "hex": "#305bbc",
  "rgb": {
    "r": 48,
    "g": 91,
    "b": 188
  },
  "hsl": {
    "h": 221.571,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.49643,
    "c": 0.16046,
    "h": 263.6
  },
  "luminance": 0.11741
}

Semantic roles & 50–950 ramp

primary

#305BBC

secondary

#CAB27E

accent

#B245E3

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #305BBC

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

Preview Lab → · Contrast checker → · Palette generator →