#301B9A#301B9A

#301B9A is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.5% C 0.188 H 278.4°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#301B9A
RGB	rgb(48, 27, 154)
HSL	hsl(250, 70%, 35%)
HSV	hsv(250, 82%, 60%)
CMYK	cmyk(68.8%, 82.5%, 0%, 39.6%)
CIE-LAB	lab(22.81, 46.62, -64.51)
CIE-LCH	lch(22.81, 79.60, 305.85°)
OKLab	oklab(35.55% 0.0274 -0.1863)
OKLCH	oklch(35.55% 0.188 278.4)
XYZ	xyz(7.4417, 3.7447, 30.8962)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301B9A #859A1B

analogous

#1B469A #301B9A #6F1B9A

triadic

#301B9A #9A301B #1B9A30

tetradic

#301B9A #9A1B46 #859A1B #1B9A6F

square

#301B9A #9A1B46 #859A1B #1B9A6F

split-complementary

#301B9A #9A6F1B #469A1B

monochromatic

#100932 #201266 #301B9A #4024CE #674FE0

Accessibility & contrast

On white

12.01

#301B9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#301B9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301B9A

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301B9A	#FFFFFF	#000000	##FFFFFF
##301B9A	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9D

Deuteranopia (green-blind)

#003198

Tritanopia (blue-blind)

#00435C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #301b9a;
/* rgb */ color: rgb(48, 27, 154);
/* oklch */ color: oklch(35.5% 0.188 278.4);

Tailwind

colors: {
  custom: {
    50: '#795cb9',
    500: '#301b9a',
    950: '#000000',
  },
}

SCSS

$custom: #301b9a;
$custom-light: #795cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#301b9a",
  "rgb": {
    "r": 48,
    "g": 27,
    "b": 154
  },
  "hsl": {
    "h": 249.921,
    "s": 70.166,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35549,
    "c": 0.18834,
    "h": 278.4
  },
  "luminance": 0.03745
}

Semantic roles & 50–950 ramp

primary

#301B9A

secondary

#AFC34E

accent

#ED3BD0

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #301B9A

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

Preview Lab → · Contrast checker → · Palette generator →