#301EBB#301EBB

#301EBB is a dark, highly saturated blue. Relative luminance 0.051; OKLCH L 39.7% C 0.224 H 274.2°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#301EBB
RGB	rgb(48, 30, 187)
HSL	hsl(247, 72%, 43%)
HSV	hsv(247, 84%, 73%)
CMYK	cmyk(74.3%, 84%, 0%, 26.7%)
CIE-LAB	lab(27.14, 55.10, -77.24)
CIE-LCH	lch(27.14, 94.88, 305.50°)
OKLab	oklab(39.66% 0.0165 -0.2233)
OKLCH	oklch(39.66% 0.224 274.2)
XYZ	xyz(10.6499, 5.1437, 47.4356)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301EBB #A9BB1E

analogous

#1E5ABB #301EBB #7E1EBB

triadic

#301EBB #BB301E #1EBB30

tetradic

#301EBB #BB1E5A #A9BB1E #1EBB7E

square

#301EBB #BB1E5A #A9BB1E #1EBB7E

split-complementary

#301EBB #BB7E1E #5ABB1E

monochromatic

#150D52 #221686 #301EBB #4A37DF #7A6CE7

Accessibility & contrast

On white

10.35

#301EBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#301EBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301EBB

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301EBB	#FFFFFF	#000000	##FFFFFF
##301EBB	1.00	10.35	2.03	10.35
#FFFFFF	10.35	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047BF

Deuteranopia (green-blind)

#0039B8

Tritanopia (blue-blind)

#00516F

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #301ebb;
/* rgb */ color: rgb(48, 30, 187);
/* oklch */ color: oklch(39.7% 0.224 274.2);

Tailwind

colors: {
  custom: {
    50: '#8060d1',
    500: '#301ebb',
    950: '#000000',
  },
}

SCSS

$custom: #301ebb;
$custom-light: #8060d1;
$custom-dark: #000000;

JSON

{
  "hex": "#301ebb",
  "rgb": {
    "r": 48,
    "g": 30,
    "b": 187
  },
  "hsl": {
    "h": 246.879,
    "s": 72.35,
    "l": 42.549
  },
  "oklch": {
    "l": 0.39658,
    "c": 0.22392,
    "h": 274.2
  },
  "luminance": 0.05145
}

Semantic roles & 50–950 ramp

primary

#301EBB

secondary

#C2CD67

accent

#EF39DA

background

#F8F5FD

surface

#F0EAFA

border

#CBC6D3

text

#0C0514

muted

#7D7983

Preview Lab

Preview with #301EBB

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

Preview Lab → · Contrast checker → · Palette generator →