#305BBF#305BBF

#305BBF is a mid, vivid blue. Relative luminance 0.119; OKLCH L 49.9% C 0.165 H 263.9°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#305BBF
RGB	rgb(48, 91, 191)
HSL	hsl(222, 60%, 47%)
HSV	hsv(222, 75%, 75%)
CMYK	cmyk(74.9%, 52.4%, 0%, 25.1%)
CIE-LAB	lab(41.01, 20.57, -56.84)
CIE-LCH	lch(41.01, 60.45, 289.90°)
OKLab	oklab(49.87% -0.0175 -0.1636)
OKLCH	oklch(49.87% 0.165 263.9)
XYZ	xyz(14.3606, 11.8706, 50.8145)
Luminance	0.1187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305BBF #BF9430

analogous

#30A3BF #305BBF #4D30BF

triadic

#305BBF #BF305B #5BBF30

tetradic

#305BBF #BF30A3 #BF9430 #30BF4D

square

#305BBF #BF30A3 #BF9430 #30BF4D

split-complementary

#305BBF #BF4D30 #A3BF30

monochromatic

#172C5D #24448E #305BBF #577DD5 #88A3E1

Accessibility & contrast

On white

6.22

#305BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#305BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305BBF

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305BBF	#FFFFFF	#000000	##FFFFFF
##305BBF	1.00	6.22	3.37	6.22
#FFFFFF	6.22	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1668C3

Deuteranopia (green-blind)

#005ABD

Tritanopia (blue-blind)

#007384

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #305bbf;
/* rgb */ color: rgb(48, 91, 191);
/* oklch */ color: oklch(49.9% 0.165 263.9);

Tailwind

colors: {
  custom: {
    50: '#7c88d3',
    500: '#305bbf',
    950: '#000000',
  },
}

SCSS

$custom: #305bbf;
$custom-light: #7c88d3;
$custom-dark: #000000;

JSON

{
  "hex": "#305bbf",
  "rgb": {
    "r": 48,
    "g": 91,
    "b": 191
  },
  "hsl": {
    "h": 221.958,
    "s": 59.833,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4987,
    "c": 0.16456,
    "h": 263.9
  },
  "luminance": 0.11872
}

Semantic roles & 50–950 ramp

primary

#305BBF

secondary

#CBB480

accent

#B345E3

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #305BBF

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

Preview Lab → · Contrast checker → · Palette generator →