#301EB3#301EB3

#301EB3 is a dark, highly saturated blue. Relative luminance 0.048; OKLCH L 38.7% C 0.215 H 275.0°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#301EB3
RGB	rgb(48, 30, 179)
HSL	hsl(247, 71%, 41%)
HSV	hsv(247, 83%, 70%)
CMYK	cmyk(73.2%, 83.2%, 0%, 29.8%)
CIE-LAB	lab(26.19, 52.75, -74.05)
CIE-LCH	lch(26.19, 90.92, 305.46°)
OKLab	oklab(38.73% 0.0188 -0.2141)
OKLCH	oklch(38.73% 0.215 275)
XYZ	xyz(9.8172, 4.8106, 43.0503)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301EB3 #A1B31E

analogous

#1E56B3 #301EB3 #7A1EB3

triadic

#301EB3 #B3301E #1EB330

tetradic

#301EB3 #B31E56 #A1B31E #1EB37A

square

#301EB3 #B31E56 #A1B31E #1EB37A

split-complementary

#301EB3 #B37A1E #56B31E

monochromatic

#140C4A #22157F #301EB3 #4632DD #7566E5

Accessibility & contrast

On white

10.70

#301EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#301EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301EB3

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301EB3	#FFFFFF	#000000	##FFFFFF
##301EB3	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B7

Deuteranopia (green-blind)

#0037B1

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #301eb3;
/* rgb */ color: rgb(48, 30, 179);
/* oklch */ color: oklch(38.7% 0.215 275.0);

Tailwind

colors: {
  custom: {
    50: '#7e60cb',
    500: '#301eb3',
    950: '#000000',
  },
}

SCSS

$custom: #301eb3;
$custom-light: #7e60cb;
$custom-dark: #000000;

JSON

{
  "hex": "#301eb3",
  "rgb": {
    "r": 48,
    "g": 30,
    "b": 179
  },
  "hsl": {
    "h": 247.248,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.3873,
    "c": 0.2149,
    "h": 275
  },
  "luminance": 0.04812
}

Semantic roles & 50–950 ramp

primary

#301EB3

secondary

#BECB62

accent

#EE3AD8

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #301EB3

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

Preview Lab → · Contrast checker → · Palette generator →