#303288#303288

#303288 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.2% C 0.140 H 276.1°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#303288
RGB	rgb(48, 50, 136)
HSL	hsl(239, 48%, 36%)
HSV	hsv(239, 65%, 53%)
CMYK	cmyk(64.7%, 63.2%, 0%, 46.7%)
CIE-LAB	lab(25.82, 27.32, -48.43)
CIE-LCH	lch(25.82, 55.60, 299.43°)
OKLab	oklab(37.16% 0.015 -0.1394)
OKLCH	oklch(37.16% 0.14 276.1)
XYZ	xyz(6.8020, 4.6866, 23.8339)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303288 #888630

analogous

#305E88 #303288 #5A3088

triadic

#303288 #883032 #328830

tetradic

#303288 #88305E #888630 #30885A

square

#303288 #88305E #888630 #30885A

split-complementary

#303288 #885A30 #5E8830

monochromatic

#10112E #20215B #303288 #4043B5 #696BCA

Accessibility & contrast

On white

10.84

#303288 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#303288 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303288

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303288	#FFFFFF	#000000	##FFFFFF
##303288	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418B

Deuteranopia (green-blind)

#003986

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #303288;
/* rgb */ color: rgb(48, 50, 136);
/* oklch */ color: oklch(37.2% 0.140 276.1);

Tailwind

colors: {
  custom: {
    50: '#736aab',
    500: '#303288',
    950: '#000000',
  },
}

SCSS

$custom: #303288;
$custom-light: #736aab;
$custom-dark: #000000;

JSON

{
  "hex": "#303288",
  "rgb": {
    "r": 48,
    "g": 50,
    "b": 136
  },
  "hsl": {
    "h": 238.636,
    "s": 47.826,
    "l": 36.078
  },
  "oklch": {
    "l": 0.37163,
    "c": 0.14024,
    "h": 276.1
  },
  "luminance": 0.04687
}

Semantic roles & 50–950 ramp

primary

#303288

secondary

#B1AF63

accent

#D450D7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #303288

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

Preview Lab → · Contrast checker → · Palette generator →