#305CB2#305CB2

#305CB2 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.1% C 0.145 H 262.1°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#305CB2
RGB	rgb(48, 92, 178)
HSL	hsl(220, 58%, 44%)
HSV	hsv(220, 73%, 70%)
CMYK	cmyk(73%, 48.3%, 0%, 30.2%)
CIE-LAB	lab(40.40, 15.02, -50.21)
CIE-LCH	lch(40.40, 52.41, 286.65°)
OKLab	oklab(49.13% -0.02 -0.1441)
OKLCH	oklch(49.13% 0.145 262.1)
XYZ	xyz(13.0791, 11.4956, 43.6404)
Luminance	0.1150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305CB2 #B28630

analogous

#309DB2 #305CB2 #4530B2

triadic

#305CB2 #B2305C #5CB230

tetradic

#305CB2 #B2309D #B28630 #30B245

square

#305CB2 #B2309D #B28630 #30B245

split-complementary

#305CB2 #B24530 #9DB230

monochromatic

#162A52 #234382 #305CB2 #507BD0 #809FDD

Accessibility & contrast

On white

6.36

#305CB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#305CB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305CB2

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305CB2	#FFFFFF	#000000	##FFFFFF
##305CB2	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D66B5

Deuteranopia (green-blind)

#055AB0

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #305cb2;
/* rgb */ color: rgb(48, 92, 178);
/* oklch */ color: oklch(49.1% 0.145 262.1);

Tailwind

colors: {
  custom: {
    50: '#7989ca',
    500: '#305cb2',
    950: '#000000',
  },
}

SCSS

$custom: #305cb2;
$custom-light: #7989ca;
$custom-dark: #000000;

JSON

{
  "hex": "#305cb2",
  "rgb": {
    "r": 48,
    "g": 92,
    "b": 178
  },
  "hsl": {
    "h": 219.692,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.49125,
    "c": 0.14548,
    "h": 262.1
  },
  "luminance": 0.11497
}

Semantic roles & 50–950 ramp

primary

#305CB2

secondary

#C6AB78

accent

#AD47E1

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305CB2

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

Preview Lab → · Contrast checker → · Palette generator →