#305CB7#305CB7

#305CB7 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.5% C 0.152 H 262.7°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#305CB7
RGB	rgb(48, 92, 183)
HSL	hsl(220, 58%, 45%)
HSV	hsv(220, 74%, 72%)
CMYK	cmyk(73.8%, 49.7%, 0%, 28.2%)
CIE-LAB	lab(40.74, 16.91, -52.61)
CIE-LCH	lch(40.74, 55.26, 287.82°)
OKLab	oklab(49.49% -0.0193 -0.1511)
OKLCH	oklch(49.49% 0.152 262.7)
XYZ	xyz(13.5903, 11.7001, 46.3327)
Luminance	0.1170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305CB7 #B78B30

analogous

#30A0B7 #305CB7 #4730B7

triadic

#305CB7 #B7305C #5CB730

tetradic

#305CB7 #B730A0 #B78B30 #30B747

square

#305CB7 #B730A0 #B78B30 #30B747

split-complementary

#305CB7 #B74730 #A0B730

monochromatic

#172B56 #234487 #305CB7 #527CD2 #83A1DE

Accessibility & contrast

On white

6.29

#305CB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#305CB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305CB7

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305CB7	#FFFFFF	#000000	##FFFFFF
##305CB7	1.00	6.29	3.34	6.29
#FFFFFF	6.29	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2767BA

Deuteranopia (green-blind)

#005AB5

Tritanopia (blue-blind)

#007281

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #305cb7;
/* rgb */ color: rgb(48, 92, 183);
/* oklch */ color: oklch(49.5% 0.152 262.7);

Tailwind

colors: {
  custom: {
    50: '#7a89cd',
    500: '#305cb7',
    950: '#000000',
  },
}

SCSS

$custom: #305cb7;
$custom-light: #7a89cd;
$custom-dark: #000000;

JSON

{
  "hex": "#305cb7",
  "rgb": {
    "r": 48,
    "g": 92,
    "b": 183
  },
  "hsl": {
    "h": 220.444,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.49485,
    "c": 0.15237,
    "h": 262.7
  },
  "luminance": 0.11702
}

Semantic roles & 50–950 ramp

primary

#305CB7

secondary

#C8AF7B

accent

#AF46E2

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #305CB7

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

Preview Lab → · Contrast checker → · Palette generator →