#305CB1#305CB1

#305CB1 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.1% C 0.144 H 262.0°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#305CB1
RGB	rgb(48, 92, 177)
HSL	hsl(220, 57%, 44%)
HSV	hsv(220, 73%, 69%)
CMYK	cmyk(72.9%, 48%, 0%, 30.6%)
CIE-LAB	lab(40.34, 14.64, -49.73)
CIE-LCH	lch(40.34, 51.84, 286.41°)
OKLab	oklab(49.05% -0.0201 -0.1427)
OKLCH	oklch(49.05% 0.144 262)
XYZ	xyz(12.9790, 11.4556, 43.1136)
Luminance	0.1146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305CB1 #B18530

analogous

#309DB1 #305CB1 #4530B1

triadic

#305CB1 #B1305C #5CB130

tetradic

#305CB1 #B1309D #B18530 #30B145

square

#305CB1 #B1309D #B18530 #30B145

split-complementary

#305CB1 #B14530 #9DB130

monochromatic

#162A51 #234381 #305CB1 #4F7BCF #7F9FDC

Accessibility & contrast

On white

6.38

#305CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#305CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305CB1

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305CB1	#FFFFFF	#000000	##FFFFFF
##305CB1	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E65B4

Deuteranopia (green-blind)

#095AAF

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #305cb1;
/* rgb */ color: rgb(48, 92, 177);
/* oklch */ color: oklch(49.1% 0.144 262.0);

Tailwind

colors: {
  custom: {
    50: '#7989c9',
    500: '#305cb1',
    950: '#000000',
  },
}

SCSS

$custom: #305cb1;
$custom-light: #7989c9;
$custom-dark: #000000;

JSON

{
  "hex": "#305cb1",
  "rgb": {
    "r": 48,
    "g": 92,
    "b": 177
  },
  "hsl": {
    "h": 219.535,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.49053,
    "c": 0.14408,
    "h": 262
  },
  "luminance": 0.11457
}

Semantic roles & 50–950 ramp

primary

#305CB1

secondary

#C5AB78

accent

#AC47E1

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305CB1

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

Preview Lab → · Contrast checker → · Palette generator →