#301BB3#301BB3

#301BB3 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.4% C 0.217 H 275.2°. Best body text is #FFFFFF at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#301BB3
RGB	rgb(48, 27, 179)
HSL	hsl(248, 74%, 40%)
HSV	hsv(248, 85%, 70%)
CMYK	cmyk(73.2%, 84.9%, 0%, 29.8%)
CIE-LAB	lab(25.76, 54.01, -74.76)
CIE-LCH	lch(25.76, 92.23, 305.85°)
OKLab	oklab(38.44% 0.0197 -0.2161)
OKLCH	oklch(38.44% 0.217 275.2)
XYZ	xyz(9.7449, 4.6660, 43.0261)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301BB3 #9EB31B

analogous

#1B52B3 #301BB3 #7C1BB3

triadic

#301BB3 #B3301B #1BB330

tetradic

#301BB3 #B31B52 #9EB31B #1BB37C

square

#301BB3 #B31B52 #9EB31B #1BB37C

split-complementary

#301BB3 #B37C1B #52B31B

monochromatic

#130B49 #22137E #301BB3 #452CDF #7461E7

Accessibility & contrast

On white

10.86

#301BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#301BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301BB3

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301BB3	#FFFFFF	#000000	##FFFFFF
##301BB3	1.00	10.86	1.93	10.86
#FFFFFF	10.86	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B7

Deuteranopia (green-blind)

#0036B0

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #301bb3;
/* rgb */ color: rgb(48, 27, 179);
/* oklch */ color: oklch(38.4% 0.217 275.2);

Tailwind

colors: {
  custom: {
    50: '#7f5ecb',
    500: '#301bb3',
    950: '#000000',
  },
}

SCSS

$custom: #301bb3;
$custom-light: #7f5ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#301bb3",
  "rgb": {
    "r": 48,
    "g": 27,
    "b": 179
  },
  "hsl": {
    "h": 248.289,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.38436,
    "c": 0.21699,
    "h": 275.2
  },
  "luminance": 0.04667
}

Semantic roles & 50–950 ramp

primary

#301BB3

secondary

#BDCC5E

accent

#F037D7

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #301BB3

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

Preview Lab → · Contrast checker → · Palette generator →