#30399B#30399B

#30399B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.2% C 0.158 H 273.0°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#30399B
RGB	rgb(48, 57, 155)
HSL	hsl(235, 53%, 40%)
HSV	hsv(235, 69%, 61%)
CMYK	cmyk(69%, 63.2%, 0%, 39.2%)
CIE-LAB	lab(29.21, 29.56, -54.60)
CIE-LCH	lch(29.21, 62.09, 298.44°)
OKLab	oklab(40.16% 0.0081 -0.1575)
OKLCH	oklch(40.16% 0.158 273)
XYZ	xyz(8.5965, 5.9204, 31.6937)
Luminance	0.0592 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#30399B #9B9230

analogous

#306F9B #30399B #5C309B

triadic

#30399B #9B3039 #399B30

tetradic

#30399B #9B306F #9B9230 #309B5C

square

#30399B #9B306F #9B9230 #309B5C

split-complementary

#30399B #9B5C30 #6F9B30

monochromatic

#13173E #22286C #30399B #434EC5 #727AD3

Accessibility & contrast

On white

9.61

#30399B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#30399B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #30399B

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##30399B	#FFFFFF	#000000	##FFFFFF
##30399B	1.00	9.61	2.18	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#004099

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #30399b;
/* rgb */ color: rgb(48, 57, 155);
/* oklch */ color: oklch(40.2% 0.158 273.0);

Tailwind

colors: {
  custom: {
    50: '#766fb9',
    500: '#30399b',
    950: '#000000',
  },
}

SCSS

$custom: #30399b;
$custom-light: #766fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#30399b",
  "rgb": {
    "r": 48,
    "g": 57,
    "b": 155
  },
  "hsl": {
    "h": 234.953,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40158,
    "c": 0.1577,
    "h": 273
  },
  "luminance": 0.05921
}

Semantic roles & 50–950 ramp

primary

#30399B

secondary

#BBB46C

accent

#D04CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #30399B

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

Preview Lab → · Contrast checker → · Palette generator →