#301FB4#301FB4

#301FB4 is a dark, highly saturated blue. Relative luminance 0.049; OKLCH L 38.9% C 0.215 H 274.8°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#301FB4
RGB	rgb(48, 31, 180)
HSL	hsl(247, 71%, 41%)
HSV	hsv(247, 83%, 71%)
CMYK	cmyk(73.3%, 82.8%, 0%, 29.4%)
CIE-LAB	lab(26.46, 52.61, -74.21)
CIE-LCH	lch(26.46, 90.96, 305.33°)
OKLab	oklab(38.95% 0.0182 -0.2145)
OKLCH	oklch(38.95% 0.215 274.8)
XYZ	xyz(9.9444, 4.9026, 43.5934)
Luminance	0.0490 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301FB4 #A3B41F

analogous

#1F59B4 #301FB4 #7B1FB4

triadic

#301FB4 #B4301F #1FB430

tetradic

#301FB4 #B41F59 #A3B41F #1FB47B

square

#301FB4 #B41F59 #A3B41F #1FB47B

split-complementary

#301FB4 #B47B1F #59B41F

monochromatic

#140D4C #221680 #301FB4 #4734DC #7768E5

Accessibility & contrast

On white

10.60

#301FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#301FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301FB4

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301FB4	#FFFFFF	#000000	##FFFFFF
##301FB4	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045B8

Deuteranopia (green-blind)

#0038B2

Tritanopia (blue-blind)

#004F6B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #301fb4;
/* rgb */ color: rgb(48, 31, 180);
/* oklch */ color: oklch(38.9% 0.215 274.8);

Tailwind

colors: {
  custom: {
    50: '#7e60cc',
    500: '#301fb4',
    950: '#000000',
  },
}

SCSS

$custom: #301fb4;
$custom-light: #7e60cc;
$custom-dark: #000000;

JSON

{
  "hex": "#301fb4",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 180
  },
  "hsl": {
    "h": 246.846,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.38948,
    "c": 0.21532,
    "h": 274.8
  },
  "luminance": 0.04904
}

Semantic roles & 50–950 ramp

primary

#301FB4

secondary

#BFCB64

accent

#ED3AD9

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #301FB4

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

Preview Lab → · Contrast checker → · Palette generator →