#305FB1#305FB1

#305FB1 is a mid, vivid blue. Relative luminance 0.120; OKLCH L 49.7% C 0.140 H 260.7°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#305FB1
RGB	rgb(48, 95, 177)
HSL	hsl(218, 57%, 44%)
HSV	hsv(218, 73%, 69%)
CMYK	cmyk(72.9%, 46.3%, 0%, 30.6%)
CIE-LAB	lab(41.19, 12.69, -48.35)
CIE-LCH	lch(41.19, 49.99, 284.71°)
OKLab	oklab(49.71% -0.0228 -0.1386)
OKLCH	oklch(49.71% 0.14 260.7)
XYZ	xyz(13.2441, 11.9857, 43.2019)
Luminance	0.1199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305FB1 #B18230

analogous

#30A0B1 #305FB1 #4230B1

triadic

#305FB1 #B1305F #5FB130

tetradic

#305FB1 #B130A0 #B18230 #30B142

square

#305FB1 #B130A0 #B18230 #30B142

split-complementary

#305FB1 #B14230 #A0B130

monochromatic

#162B51 #234581 #305FB1 #4F7ECF #7FA1DC

Accessibility & contrast

On white

6.18

#305FB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#305FB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305FB1

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305FB1	#FFFFFF	#000000	##FFFFFF
##305FB1	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3467B4

Deuteranopia (green-blind)

#185CAF

Tritanopia (blue-blind)

#00727F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #305fb1;
/* rgb */ color: rgb(48, 95, 177);
/* oklch */ color: oklch(49.7% 0.140 260.7);

Tailwind

colors: {
  custom: {
    50: '#798bc9',
    500: '#305fb1',
    950: '#000000',
  },
}

SCSS

$custom: #305fb1;
$custom-light: #798bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#305fb1",
  "rgb": {
    "r": 48,
    "g": 95,
    "b": 177
  },
  "hsl": {
    "h": 218.14,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.49711,
    "c": 0.14043,
    "h": 260.7
  },
  "luminance": 0.11987
}

Semantic roles & 50–950 ramp

primary

#305FB1

secondary

#C5A978

accent

#A947E1

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #305FB1

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

Preview Lab → · Contrast checker → · Palette generator →