#303AAB#303AAB

#303AAB is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.178 H 272.1°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#303AAB
RGB	rgb(48, 58, 171)
HSL	hsl(235, 56%, 43%)
HSV	hsv(235, 72%, 67%)
CMYK	cmyk(71.9%, 66.1%, 0%, 32.9%)
CIE-LAB	lab(30.86, 34.67, -61.55)
CIE-LCH	lch(30.86, 70.65, 299.39°)
OKLab	oklab(41.8% 0.0064 -0.1779)
OKLCH	oklch(41.8% 0.178 272.1)
XYZ	xyz(10.0802, 6.5938, 39.2617)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303AAB #ABA130

analogous

#3077AB #303AAB #6330AB

triadic

#303AAB #AB303A #3AAB30

tetradic

#303AAB #AB3077 #ABA130 #30AB63

square

#303AAB #AB3077 #ABA130 #30AB63

split-complementary

#303AAB #AB6330 #77AB30

monochromatic

#151A4B #232A7B #303AAB #4C56CD #7B83DA

Accessibility & contrast

On white

9.06

#303AAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#303AAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AAB

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AAB	#FFFFFF	#000000	##FFFFFF
##303AAB	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAF

Deuteranopia (green-blind)

#0043A9

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #303aab;
/* rgb */ color: rgb(48, 58, 171);
/* oklch */ color: oklch(41.8% 0.178 272.1);

Tailwind

colors: {
  custom: {
    50: '#7a70c5',
    500: '#303aab',
    950: '#000000',
  },
}

SCSS

$custom: #303aab;
$custom-light: #7a70c5;
$custom-dark: #000000;

JSON

{
  "hex": "#303aab",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 171
  },
  "hsl": {
    "h": 235.122,
    "s": 56.164,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41804,
    "c": 0.178,
    "h": 272.1
  },
  "luminance": 0.06595
}

Semantic roles & 50–950 ramp

primary

#303AAB

secondary

#C3BC74

accent

#D348DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #303AAB

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

Preview Lab → · Contrast checker → · Palette generator →