#303DAE#303DAE

#303DAE is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.178 H 271.3°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#303DAE
RGB	rgb(48, 61, 174)
HSL	hsl(234, 57%, 44%)
HSV	hsv(234, 72%, 68%)
CMYK	cmyk(72.4%, 64.9%, 0%, 31.8%)
CIE-LAB	lab(31.85, 33.84, -61.72)
CIE-LCH	lch(31.85, 70.39, 298.73°)
OKLab	oklab(42.61% 0.0042 -0.1784)
OKLCH	oklch(42.61% 0.178 271.3)
XYZ	xyz(10.5251, 7.0208, 40.8367)
Luminance	0.0702 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.02

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303DAE #AEA130

analogous

#307CAE #303DAE #6230AE

triadic

#303DAE #AE303D #3DAE30

tetradic

#303DAE #AE307C #AEA130 #30AE62

square

#303DAE #AE307C #AEA130 #30AE62

split-complementary

#303DAE #AE6230 #7CAE30

monochromatic

#161B4E #232C7E #303DAE #4D5BCE #7D87DB

Accessibility & contrast

On white

8.73

#303DAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#303DAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DAE

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DAE	#FFFFFF	#000000	##FFFFFF
##303DAE	1.00	8.73	2.40	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B2

Deuteranopia (green-blind)

#0045AC

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #303dae;
/* rgb */ color: rgb(48, 61, 174);
/* oklch */ color: oklch(42.6% 0.178 271.3);

Tailwind

colors: {
  custom: {
    50: '#7a72c7',
    500: '#303dae',
    950: '#000000',
  },
}

SCSS

$custom: #303dae;
$custom-light: #7a72c7;
$custom-dark: #000000;

JSON

{
  "hex": "#303dae",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 174
  },
  "hsl": {
    "h": 233.81,
    "s": 56.757,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42611,
    "c": 0.17841,
    "h": 271.3
  },
  "luminance": 0.07022
}

Semantic roles & 50–950 ramp

primary

#303DAE

secondary

#C4BC76

accent

#D048E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303DAE

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

Preview Lab → · Contrast checker → · Palette generator →