#303DAD#303DAD

#303DAD is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.177 H 271.4°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#303DAD
RGB	rgb(48, 61, 173)
HSL	hsl(234, 57%, 43%)
HSV	hsv(234, 72%, 68%)
CMYK	cmyk(72.3%, 64.7%, 0%, 32.2%)
CIE-LAB	lab(31.77, 33.48, -61.27)
CIE-LCH	lch(31.77, 69.82, 298.65°)
OKLab	oklab(42.52% 0.0042 -0.177)
OKLCH	oklch(42.52% 0.177 271.4)
XYZ	xyz(10.4279, 6.9819, 40.3251)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.13

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303DAD #ADA030

analogous

#307BAD #303DAD #6130AD

triadic

#303DAD #AD303D #3DAD30

tetradic

#303DAD #AD307B #ADA030 #30AD61

square

#303DAD #AD307B #ADA030 #30AD61

split-complementary

#303DAD #AD6130 #7BAD30

monochromatic

#151B4D #232C7D #303DAD #4D5ACE #7D86DB

Accessibility & contrast

On white

8.76

#303DAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#303DAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DAD

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DAD	#FFFFFF	#000000	##FFFFFF
##303DAD	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B1

Deuteranopia (green-blind)

#0045AB

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #303dad;
/* rgb */ color: rgb(48, 61, 173);
/* oklch */ color: oklch(42.5% 0.177 271.4);

Tailwind

colors: {
  custom: {
    50: '#7a72c6',
    500: '#303dad',
    950: '#000000',
  },
}

SCSS

$custom: #303dad;
$custom-light: #7a72c6;
$custom-dark: #000000;

JSON

{
  "hex": "#303dad",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 173
  },
  "hsl": {
    "h": 233.76,
    "s": 56.561,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42519,
    "c": 0.17708,
    "h": 271.4
  },
  "luminance": 0.06983
}

Semantic roles & 50–950 ramp

primary

#303DAD

secondary

#C3BB75

accent

#D048E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303DAD

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

Preview Lab → · Contrast checker → · Palette generator →