#305BB7#305BB7

#305BB7 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.3% C 0.154 H 263.1°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#305BB7
RGB	rgb(48, 91, 183)
HSL	hsl(221, 58%, 45%)
HSV	hsv(221, 74%, 72%)
CMYK	cmyk(73.8%, 50.3%, 0%, 28.2%)
CIE-LAB	lab(40.46, 17.56, -53.06)
CIE-LCH	lch(40.46, 55.89, 288.31°)
OKLab	oklab(49.27% -0.0184 -0.1525)
OKLCH	oklch(49.27% 0.154 263.1)
XYZ	xyz(13.5042, 11.5280, 46.3040)
Luminance	0.1153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305BB7 #B78C30

analogous

#309EB7 #305BB7 #4830B7

triadic

#305BB7 #B7305B #5BB730

tetradic

#305BB7 #B7309E #B78C30 #30B748

square

#305BB7 #B7309E #B78C30 #30B748

split-complementary

#305BB7 #B74830 #9EB730

monochromatic

#172B56 #234387 #305BB7 #527BD2 #83A0DE

Accessibility & contrast

On white

6.35

#305BB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#305BB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305BB7

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305BB7	#FFFFFF	#000000	##FFFFFF
##305BB7	1.00	6.35	3.31	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2466BA

Deuteranopia (green-blind)

#005AB5

Tritanopia (blue-blind)

#007180

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #305bb7;
/* rgb */ color: rgb(48, 91, 183);
/* oklch */ color: oklch(49.3% 0.154 263.1);

Tailwind

colors: {
  custom: {
    50: '#7a88cd',
    500: '#305bb7',
    950: '#000000',
  },
}

SCSS

$custom: #305bb7;
$custom-light: #7a88cd;
$custom-dark: #000000;

JSON

{
  "hex": "#305bb7",
  "rgb": {
    "r": 48,
    "g": 91,
    "b": 183
  },
  "hsl": {
    "h": 220.889,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.49272,
    "c": 0.15361,
    "h": 263.1
  },
  "luminance": 0.11529
}

Semantic roles & 50–950 ramp

primary

#305BB7

secondary

#C8AF7B

accent

#B046E2

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #305BB7

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

Preview Lab → · Contrast checker → · Palette generator →