#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
RGBrgb(48, 27, 179)
HSLhsl(248, 74%, 40%)
HSVhsv(248, 85%, 70%)
CMYKcmyk(73.2%, 84.9%, 0%, 29.8%)
CIE-LABlab(25.76, 54.01, -74.76)
CIE-LCHlch(25.76, 92.23, 305.85°)
OKLaboklab(38.44% 0.0197 -0.2161)
OKLCHoklch(38.44% 0.217 275.2)
XYZxyz(9.7449, 4.6660, 43.0261)
Luminance0.0467 (WCAG relative)
Temperaturecool
Familyblue

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
##301BB31.0010.861.9310.86
#FFFFFF10.861.0021.001.00
#0000001.9321.001.0021.00
##FFFFFF10.861.0021.001.00

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 →

#301BB3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva