#301FB3#301FB3

#301FB3 is a dark, highly saturated blue. Relative luminance 0.049; OKLCH L 38.8% C 0.214 H 274.9°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#301FB3
RGB	rgb(48, 31, 179)
HSL	hsl(247, 70%, 41%)
HSV	hsv(247, 83%, 70%)
CMYK	cmyk(73.2%, 82.7%, 0%, 29.8%)
CIE-LAB	lab(26.34, 52.31, -73.81)
CIE-LCH	lch(26.34, 90.46, 305.33°)
OKLab	oklab(38.83% 0.0184 -0.2134)
OKLCH	oklch(38.83% 0.214 274.9)
XYZ	xyz(9.8429, 4.8620, 43.0588)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301FB3 #A2B31F

analogous

#1F58B3 #301FB3 #7A1FB3

triadic

#301FB3 #B3301F #1FB330

tetradic

#301FB3 #B31F58 #A2B31F #1FB37A

square

#301FB3 #B31F58 #A2B31F #1FB37A

split-complementary

#301FB3 #B37A1F #58B31F

monochromatic

#140D4B #22167F #301FB3 #4733DC #7668E5

Accessibility & contrast

On white

10.65

#301FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#301FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301FB3

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301FB3	#FFFFFF	#000000	##FFFFFF
##301FB3	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045B7

Deuteranopia (green-blind)

#0037B1

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #301fb3;
/* rgb */ color: rgb(48, 31, 179);
/* oklch */ color: oklch(38.8% 0.214 274.9);

Tailwind

colors: {
  custom: {
    50: '#7e60cb',
    500: '#301fb3',
    950: '#000000',
  },
}

SCSS

$custom: #301fb3;
$custom-light: #7e60cb;
$custom-dark: #000000;

JSON

{
  "hex": "#301fb3",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 179
  },
  "hsl": {
    "h": 246.892,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.38833,
    "c": 0.21418,
    "h": 274.9
  },
  "luminance": 0.04863
}

Semantic roles & 50–950 ramp

primary

#301FB3

secondary

#BECA64

accent

#ED3BD9

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #301FB3

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

Preview Lab → · Contrast checker → · Palette generator →