#301FB0#301FB0

#301FB0 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.5% C 0.211 H 275.2°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#301FB0
RGB	rgb(48, 31, 176)
HSL	hsl(247, 70%, 41%)
HSV	hsv(247, 82%, 69%)
CMYK	cmyk(72.7%, 82.4%, 0%, 31%)
CIE-LAB	lab(25.99, 51.41, -72.59)
CIE-LCH	lch(25.99, 88.95, 305.31°)
OKLab	oklab(38.49% 0.0193 -0.2099)
OKLCH	oklch(38.49% 0.211 275.2)
XYZ	xyz(9.5428, 4.7420, 41.4783)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301FB0 #9FB01F

analogous

#1F57B0 #301FB0 #781FB0

triadic

#301FB0 #B0301F #1FB030

tetradic

#301FB0 #B01F57 #9FB01F #1FB078

square

#301FB0 #B01F57 #9FB01F #1FB078

split-complementary

#301FB0 #B0781F #57B01F

monochromatic

#140D48 #22167C #301FB0 #4531DB #7465E4

Accessibility & contrast

On white

10.78

#301FB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#301FB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301FB0

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301FB0	#FFFFFF	#000000	##FFFFFF
##301FB0	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B4

Deuteranopia (green-blind)

#0037AE

Tritanopia (blue-blind)

#004D69

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #301fb0;
/* rgb */ color: rgb(48, 31, 176);
/* oklch */ color: oklch(38.5% 0.211 275.2);

Tailwind

colors: {
  custom: {
    50: '#7e60c9',
    500: '#301fb0',
    950: '#000000',
  },
}

SCSS

$custom: #301fb0;
$custom-light: #7e60c9;
$custom-dark: #000000;

JSON

{
  "hex": "#301fb0",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 176
  },
  "hsl": {
    "h": 247.034,
    "s": 70.048,
    "l": 40.588
  },
  "oklch": {
    "l": 0.38489,
    "c": 0.21074,
    "h": 275.2
  },
  "luminance": 0.04743
}

Semantic roles & 50–950 ramp

primary

#301FB0

secondary

#BDC962

accent

#ED3BD8

background

#F8F5FC

surface

#F0EAF8

border

#CBC6D1

text

#0C0513

muted

#7D7982

Preview Lab

Preview with #301FB0

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

Preview Lab → · Contrast checker → · Palette generator →