#30309B#30309B

#30309B is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.6% C 0.169 H 275.1°. Best body text is #FFFFFF at 10.39:1 contrast (WCAG AA passes).

Color values

HEX	#30309B
RGB	rgb(48, 48, 155)
HSL	hsl(240, 53%, 40%)
HSV	hsv(240, 69%, 61%)
CMYK	cmyk(69%, 69%, 0%, 39.2%)
CIE-LAB	lab(27.04, 35.33, -58.15)
CIE-LCH	lch(27.04, 68.04, 301.28°)
OKLab	oklab(38.57% 0.0149 -0.1679)
OKLCH	oklch(38.57% 0.169 275.1)
XYZ	xyz(8.1903, 5.1081, 31.5583)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#30309B #9B9B30

analogous

#30669B #30309B #66309B

triadic

#30309B #9B3030 #309B30

tetradic

#30309B #9B3066 #9B9B30 #309B66

square

#30309B #9B3066 #9B9B30 #309B66

split-complementary

#30309B #9B6630 #669B30

monochromatic

#13133E #22226C #30309B #4343C5 #7272D3

Accessibility & contrast

On white

10.39

#30309B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#30309B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #30309B

10.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##30309B	#FFFFFF	#000000	##FFFFFF
##30309B	1.00	10.39	2.02	10.39
#FFFFFF	10.39	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459E

Deuteranopia (green-blind)

#003B99

Tritanopia (blue-blind)

#004D61

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #30309b;
/* rgb */ color: rgb(48, 48, 155);
/* oklch */ color: oklch(38.6% 0.169 275.1);

Tailwind

colors: {
  custom: {
    50: '#7769b9',
    500: '#30309b',
    950: '#000000',
  },
}

SCSS

$custom: #30309b;
$custom-light: #7769b9;
$custom-dark: #000000;

JSON

{
  "hex": "#30309b",
  "rgb": {
    "r": 48,
    "g": 48,
    "b": 155
  },
  "hsl": {
    "h": 240,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.38575,
    "c": 0.16861,
    "h": 275.1
  },
  "luminance": 0.05109
}

Semantic roles & 50–950 ramp

primary

#30309B

secondary

#BBBB6C

accent

#DC4CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #30309B

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

Preview Lab → · Contrast checker → · Palette generator →